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.
Reduce your active Cooldowns by 40% after getting an Elimination.
Increase your maximum Ammo by 15.
Increase your maximum Health by 450.
Reduce the Cooldown of Fireball by 2.25s.
Heal for 200 for each enemy hit with Fireball.
Increase the damage of Fireball by 35%, decrease its Cooldown by 1s, and deal 20% increased damage for each subsequent target hit after the first.