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 - Getting an assist on an enemy god or minion kill grants 2 Protections for 5s, max 5 stacks
AURA - ALL enemies within 25 units are dealt 20 (+1.5 Per Level) Magical Damage per second.