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: Dart deals 40% increased damage and can Critically Strike. When Dart damages an enemy Ratatoskr gains 22.5% Physical Lifesteal and 20% Basic Attack damage for 6s.
PASSIVE - Enemies hit by your damaging Abilities are corrupted, taking 300 Physical Damage over 6s and reducing their Attack Speed by 10%. Subsequent hits on the same target do half the bonus damage for the next 3s. Each time you apply corruption you gain 10% Attack Speed and 5% increased Protections for 6s, up to a maximum of 5 stacks.
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.
PASSIVE - For 8s after using an ability, your next Basic Attack will deal an additional 25% damage. Abilities that function like basic attacks do not benefit from this. PASSIVE - This item grants 2.5 MP5 per 10% of your missing Mana.
PASSIVE - Your Basic Attacks benefit from an additional 20% Physical Penetration.
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.