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 gain Physical Power equal to 2% of your Maximum Mana.
PASSIVE - While in the jungle you gain 15% Power and 7% Protections.
PASSIVE - Your abilities heal you for 10% of the damage dealt to targets.
AURA - Enemies within 55 units have their Attack Speed reduced by 25%.