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 240 for each enemy hit by Calamity Blast.
Generate 10% of a Calamity Blast charge for each enemy hit with Massacre Axe.
Reduce the damage required to generate a Calamity Blast charge by 400.
Heal for 25% of the damage Absorbed by Power Siphon.
Reduce the Cooldown of Shatterfall by 0.3s for every 1s spent channeling Power Siphon.
Each Calamity Blast deals an additional 100 damage.