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 25% of the damage Absorbed by Power Siphon.
Reduce the damage required to generate a Calamity Blast charge by 200.
Reduce your damage taken by up to 12% based on the number of Calamity Blast charges you have stored.
Generate 3% Power Siphon charge for each enemy hit with Massacre Axe.
Heal for 240 for each enemy hit by Calamity Blast.
Shatterfall Stuns enemies hit for 1s, but no longer Slows.