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 - Critical Strike bonus damage dealt is increased by 25%.
PASSIVE - You gain Physical Power equal to 2% of your Maximum Mana.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks).