This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god steals 3% (+2% of your Protection from items) of their Current Health away from your target and restores it to you. This effect can only occur once every 10s.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Enemy gods within 55 units have their healing reduced by 25%. This does not stack with similar Auras. PASSIVE - When you are hit by a Hard Crowd Control, the enemy receives an aura that deals 25 Magical Damage per second to them and other enemies within a 25 unit radius for 5s. This aura is refreshed if an enemy applies additional Hard Crowd Control to you within 5s.
PASSIVE - When you take Magical Damage from Abilities your cooldowns are reduced by 3s. This can only occur once every 30s.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god deals 25 (+1.5 per level) damage and restores 25 (+1.5 per level) Health and Mana. This effect can only occur once every 10s. Can be upgraded at level 20.
AURA - Allies within 70 units gain 20 Physical and Magical Protections. PASSIVE - If you have over 300 total Protections, you gain 6% Damage Mitigation. If you have over 500 total Protections, you gain an additional 6% Damage Mitigation.
AURA - Enemy gods within 55 units have their healing reduced by 25%. This does not stack with similar Auras. PASSIVE - When you are hit by a Hard Crowd Control, the enemy receives an aura that deals 25 Magical Damage per second to them and other enemies within a 25 unit radius for 5s. This aura is refreshed if an enemy applies additional Hard Crowd Control to you within 5s.
PASSIVE - When you take Magical Damage from Abilities your cooldowns are reduced by 3s. This can only occur once every 30s.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item removes Crowd Control Effects and makes you immune to new ones for 2s. Cooldown - 170s.
Your Movement Speed is increased by 15% and your Attack Speed is increased by 40% for the next 5s. Shard Relics can be upgraded to a new Relic once you reach Level 12. Cooldown - 90s.
PASSIVE - Your Basic Attack projectile speed is increased by 40%. This item is only available to Hunters and Mages.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks). GLYPH - Your next basic attack marks an enemy god for 8s. If you hit the marked enemy or the marked enemy hits you with a basic attack or ability, gain 1 stack. Each stack provides 2% increased damage towards the marked enemy, stacking up to 10 times. This effect can only occur every 30s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Your Basic Attack projectile speed is increased by 40%. This item is only available to Hunters and Mages.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks). GLYPH - Your next basic attack marks an enemy god for 8s. If you hit the marked enemy or the marked enemy hits you with a basic attack or ability, gain 1 stack. Each stack provides 2% increased damage towards the marked enemy, stacking up to 10 times. This effect can only occur every 30s.
PASSIVE - On Basic Attack hits, deal Physical Damage equal to 1.5% of the target's maximum Health. If the target has over 2000 Health, the bonus damage scales up. This effect reaches a maximum of 6% of the targets Maximum Health at 2750 Health.
PASSIVE - Your Basic Attacks benefit from an additional 20% Physical Penetration.
PASSIVE - Every fourth Basic Attack triggers a chain lightning, damaging the target and up to 4 nearby enemies for 15 damage +60% of your total Basic Attack Power.
PASSIVE - Killing an enemy god forges a shield from their blood with Health equal to 200 + 10 per Player Level for 20s. While the Blood Shield is active you gain +10% movement speed.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Your Basic Attack projectile speed is increased by 40%. This item is only available to Hunters and Mages.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks). GLYPH - Your next basic attack marks an enemy god for 8s. If you hit the marked enemy or the marked enemy hits you with a basic attack or ability, gain 1 stack. Each stack provides 2% increased damage towards the marked enemy, stacking up to 10 times. This effect can only occur every 30s.
PASSIVE - On Basic Attack hits, deal Physical Damage equal to 1.5% of the target's maximum Health. If the target has over 2000 Health, the bonus damage scales up. This effect reaches a maximum of 6% of the targets Maximum Health at 2750 Health.
PASSIVE - Your Basic Attacks benefit from an additional 20% Physical Penetration.
PASSIVE - Every fourth Basic Attack triggers a chain lightning, damaging the target and up to 4 nearby enemies for 15 damage +60% of your total Basic Attack Power.
PASSIVE - Killing an enemy god forges a shield from their blood with Health equal to 200 + 10 per Player Level for 20s. While the Blood Shield is active you gain +10% movement speed.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item removes Crowd Control Effects and makes you immune to new ones for 2s. Cooldown - 170s.
Using this item makes you invulnerable to damage and healing for 1.5s, and prevents you from taking any actions. You may still move. Cooldown - 170s.
PASSIVE - Your Basic Attack projectile speed is increased by 40%. This item is only available to Hunters and Mages.
PASSIVE - Killing an enemy god forges a shield from their blood with Health equal to 200 + 10 per Player Level for 20s. While the Blood Shield is active you gain +10% movement speed.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks). GLYPH - Your next basic attack marks an enemy god for 8s. If you hit the marked enemy or the marked enemy hits you with a basic attack or ability, gain 1 stack. Each stack provides 2% increased damage towards the marked enemy, stacking up to 10 times. This effect can only occur every 30s.
PASSIVE - On Basic Attack hits, deal Physical Damage equal to 1.5% of the target's maximum Health. If the target has over 2000 Health, the bonus damage scales up. This effect reaches a maximum of 6% of the targets Maximum Health at 2750 Health.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item removes Crowd Control Effects and makes you immune to new ones for 2s. Cooldown - 170s.
Your Movement Speed is increased by 15% and your Attack Speed is increased by 40% for the next 5s. Shard Relics can be upgraded to a new Relic once you reach Level 12. Cooldown - 90s.
PASSIVE - Your Basic Attack projectile speed is increased by 40%. This item is only available to Hunters and Mages.
PASSIVE - Killing an enemy god forges a shield from their blood with Health equal to 200 + 10 per Player Level for 20s. While the Blood Shield is active you gain +10% movement speed.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks).
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god steals 3% (+2% of your Protection from items) of their Current Health away from your target and restores it to you. This effect can only occur once every 10s.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
PASSIVE - After healing yourself from an ability, you gain 20% Movement Speed, 15 Physical Power, and 30 Magical Power for 4 seconds. This effect can only occur once every 10 seconds.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - For each enemy God within 55 units of you, you gain a stack of 4% Damage Mitigation. This caps at 3 stacks.
PASSIVE - Your abilities deal an additional 2% of the targets maximum Health as Physical Damage. If you have over 150 Physical Power, your ability bonus damage scales up. This effect reaches a maximum of 6% Maximum Health damage at 250 Physical Power. Subsequent hits on the same target do 75% of the bonus damage for the next 3s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god steals 3% (+2% of your Protection from items) of their Current Health away from your target and restores it to you. This effect can only occur once every 10s.
AURA - Allies within 70 units gain 20 Physical and Magical Protections. PASSIVE - If you have over 300 total Protections, you gain 6% Damage Mitigation. If you have over 500 total Protections, you gain an additional 6% Damage Mitigation.
AURA - Enemy gods within 55 units have their healing reduced by 25%. This does not stack with similar Auras. PASSIVE - When you are hit by a Hard Crowd Control, the enemy receives an aura that deals 25 Magical Damage per second to them and other enemies within a 25 unit radius for 5s. This aura is refreshed if an enemy applies additional Hard Crowd Control to you within 5s.
PASSIVE - When you take Magical Damage from Abilities your cooldowns are reduced by 3s. This can only occur once every 30s.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Getting the assist for an enemy minion or jungle monster dying will provide 8 Bonus gold and restore 12 Health and 8 Mana. If you are not within 30 units of an allied god for 20 seconds this passive is disabled until you are near an allied god again. Can be upgraded at level 15.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Whenever you damage an enemy god with an ability you mark them to take 5% increased damage from all sources. This effect lasts for 8s and can only occur once every 15s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Whenever you damage an enemy god with an ability you mark them to take 5% increased damage from all sources. This effect lasts for 8s and can only occur once every 15s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Whenever you damage an enemy god with an ability you mark them to take 5% increased damage from all sources. This effect lasts for 8s and can only occur once every 15s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
AURA - Allies within 70 units gain 20 Physical and Magical Protections. PASSIVE - If you have over 300 total Protections, you gain 6% Damage Mitigation. If you have over 500 total Protections, you gain an additional 6% Damage Mitigation.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - When damaging an enemy god with an ability you deal an additional 15 + 25% of your Protections from items and abilities as Physical Damage. Can only trigger once per enemy per ability. Subsequent hits on the same target do half the bonus damage for the next 3s.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Whenever you damage an enemy god with an ability you mark them to take 5% increased damage from all sources. This effect lasts for 8s and can only occur once every 15s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Using an ability gives your next Basic Attack within the next 8 seconds +75% of your Magical Power as additional Magical Damage. The effect can only apply once every 2 seconds.
PASSIVE - If you receive a kill or assist on an Enemy God all of your non-ultimate cooldowns are reduced by 2 seconds and your ultimate cooldown is reduced by 6 seconds.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - Using an ability gives your next Basic Attack within the next 8 seconds +75% of your Magical Power as additional Magical Damage. The effect can only apply once every 2 seconds.
PASSIVE - If you receive a kill or assist on an Enemy God all of your non-ultimate cooldowns are reduced by 2 seconds and your ultimate cooldown is reduced by 6 seconds.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item will allow you to teleport up to 45 units away instantly. This item can not be used if you have taken or dealt damage in the last 3s. Cooldown - 120s.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
PASSIVE - Once every 8s, when you damage an enemy god with an attack, you gain a stack of 1 Protections in an Aura that corresponds with the damage type of the target. Once you have reached 15 stacks of both Protections, this item Evolves, giving you additional Protections and mitigation based on your total Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - Successfully hitting an enemy god with a Crowd Control ability will place a debuff on them, reducing their Physical and Magical Protections by 0.8 * your level for 5s.
PASSIVE - When your Ultimate ability has finished casting, you gain a Shield equal to 90% of your Protections from items and abilities for 5s. When destroyed, by timing out or being depleted, it explodes in a 30 unit radius and deals Magical damage equal to 75% of your Protections from items and abilities and slows targets by 25% for 3s. This can only occur once every 45 seconds.
PASSIVE - Enemies hit by your abilities have 40% reduced healing for 5 seconds. Your next successful damaging ability on an enemy triggers a chain lightning, damaging the target and up to 4 nearby enemies for 40 damage + 10% of your Magical Power. This can only occur once every 20 seconds.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item will allow you to teleport up to 45 units away instantly. This item can not be used if you have taken or dealt damage in the last 3s. Cooldown - 120s.
PASSIVE - Getting the assist for an enemy minion or jungle monster dying will provide 8 Bonus gold and restore 12 Health and 8 Mana. If you are not within 30 units of an allied god for 20 seconds this passive is disabled until you are near an allied god again. Can be upgraded at level 15.
PASSIVE - Assists on a minion give 1 Stack and God kills and assists give 5 Stacks. Stacks provide 1 Physical and Magical Protection. At 45 Stacks this item evolves, providing an Aura of 10 Physical Protection and 10 Magical Protection.
AURA - Enemy gods within 55 units have their Magical Protection reduced by 10%.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
AURA - You gain 8 GP5 if you have the lowest gold on your team. Evenly split 80 Physical and Magical Protection among all allied gods within 70 units and yourself. If you are alone you only gain 30 Physical and Magical Protections.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
AURA - Enemy gods within 55 units have their Magical Protection reduced by 10%.
PASSIVE - When your Ultimate ability has finished casting, you gain a Shield equal to 90% of your Protections from items and abilities for 5s. When destroyed, by timing out or being depleted, it explodes in a 30 unit radius and deals Magical damage equal to 75% of your Protections from items and abilities and slows targets by 25% for 3s. This can only occur once every 45 seconds.
AURA - ALL enemies within 25 units are dealt 20 (+1.5 Per Level) Magical Damage per second.
PASSIVE - If you receive a kill or assist on an Enemy God all of your non-ultimate cooldowns are reduced by 2 seconds and your ultimate cooldown is reduced by 6 seconds.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god deals 25 (+1.5 per level) damage and restores 25 (+1.5 per level) Health and Mana. This effect can only occur once every 10s. Can be upgraded at level 20.
AURA - Allies within 70 units receive 10 Physical Protection and 10 Magical Protection.
PASSIVE - While below 60% Health you become Berserk for 5s. While Berserk, you gain 5% Damage Mitigation and 20% Attack Speed. This effect can only occur once every 15 seconds.
PASSIVE - When you take Magical Damage from Abilities your cooldowns are reduced by 3s. This can only occur once every 30s.
PASSIVE - Your abilities deal an additional 2% of the targets maximum Health as Physical Damage. If you have over 150 Physical Power, your ability bonus damage scales up. This effect reaches a maximum of 6% Maximum Health damage at 250 Physical Power. Subsequent hits on the same target do 75% of the bonus damage for the next 3s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - Damaging an enemy god deals 25 (+1.5 per level) damage and restores 25 (+1.5 per level) Health and Mana. This effect can only occur once every 10s. Can be upgraded at level 20.
AURA - ALL enemies within 25 units are dealt 20 (+1.5 Per Level) Magical Damage per second.
PASSIVE - When you take damage and are below 40% Health, you gain a Shield with health equal to 12% of your Maximum Health for 20s. Can only occur once every 60s.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - You permanently gain 15 Mana per Stack, and receive 5 Stacks for a god kill, and 1 Stack for a minion kill (max. 50 stacks). You gain Physical Power equal to 2% of your Maximum Mana. At 50 stacks this item Evolves, gaining 10% Cooldown Reduction.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Using this item removes Crowd Control Effects and makes you immune to new ones for 2s. Cooldown - 140s.
PASSIVE - You permanently gain 15 Mana per Stack, and receive 5 Stacks for a god kill, and 1 Stack for a minion kill (max. 50 stacks). You gain Physical Power equal to 2% of your Maximum Mana. At 50 stacks this item Evolves, gaining 10% Cooldown Reduction.
This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
PASSIVE - You permanently gain 15 Mana per Stack, and receive 5 Stacks for a god kill, and 1 Stack for a minion kill (max. 50 stacks). You gain Physical Power equal to 2% of your Maximum Mana. At 50 stacks this item Evolves, gaining 10% Cooldown Reduction.