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.
Increase your maximum Ammo by 30.
Heal for 360 every 1s while Shield is active and you are at or below 35% Health.
Heal for 300 for each enemy hit with Fireball.
Increase your maximum Health by 600.
Increase your Healing received from others by 10% while at or below 50% Health.
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.