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 the Cooldown of Fireball by 2.25s.
Reduce the Cooldown of Charge by 0.5s for every 1000 damage your Shield takes.
Heal for 90 every 1s while Shield is active and you are at or below 35% Health.
Heal for 400 for each enemy hit with Fireball.
Increase your maximum Health by 600.
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.