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 - While you are under 25% of your Maximum Mana, gain 20 MP5
Using this item subtracts 3s from all abilities currently on Cooldown and restores 40% Health and Mana lost within the last 5s. Cooldown - 120s.
PASSIVE - Your first ability cast gains 20% Physical Penetration. This can only occur once every 5 seconds.