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 Basic Attacks benefit from an additional 20% Physical Penetration.
PASSIVE - Basic Attacks against an enemy reduce your target's Physical Protection by 7% for 3 seconds (max. 4 Stacks).
PASSIVE - On damaging an enemy god with a Basic Attack, gain 2 Physical Pen for 5s, stacks up to 3 times.