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 additional Magical Power and Lifesteal scaled from missing Health. This caps at 70 power and 10% Lifesteal at 40% Health.
PASSIVE - Each successful basic attack applies a hex to enemies and empowers you, increasing your power by 5% and reducing the power of your opponent by 5% for 5s. (Max. 3 Stacks).