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 - Gain a stack each time you damage an enemy god with an ability or Basic Attack. At 4 stacks, your next ability or Basic Attack deals 20 + 4 per level Magical damage.
PASSIVE - On damaging an enemy god with a Basic Attack, gain 2 Physical Pen for 5s, stacks up to 3 times.