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 - Deal 15 Magical damage per second to all enemies within 25 units of you.
PASSIVE - When you take Magical Damage from Abilities your cooldowns are reduced by 3s. This can only occur once every 30s.