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 10% of the damage Absorbed by Power Siphon.
Generate 50% of a Calamity Blast charge for each enemy hit with Massacre Axe.
Heal for 300 for each enemy hit with Shatterfall.
Increase your maximum Health by 600.
Increase your Movement Speed by 2% for each Calamity Charge you have.
Shatterfall Stuns enemies hit for 1s, but no longer Slows.