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 - Your next Basic Attack deals an additional 5 + 3 per level Magical Damage. This effect can only occur once every 8s, reduced by 2s for each successful Basic Attack on an enemy god.
PASSIVE - Critical Strike bonus damage dealt is increased by 25%.
PASSIVE - Your Basic Attacks benefit from an additional 20% Physical Penetration.