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.
Heal for 400 for each enemy hit with Shatterfall.
Generate 6% Power Siphon charge for each enemy hit with Massacre Axe.
Heal for 10% of the damage Absorbed by Power Siphon.
Increase your maximum Health by 750.
Heal for 120 for each enemy hit by Calamity Blast.
Reduce the damage you take by 20% while at or below 50% Health.