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.
Every Soul Charge you detonate generates 2 Ammo.
Every Soul Orb stack you detonate increases your Movement Speed by 2% for 4s, up to a maximum of 15%.
Increase your maximum Ammo by 10.
Increase the Healing done by Rend Soul by 32%.
Increase your Ultimate charge rate by 14%.
Each Soul Charge you detonate with Rend Soul increases your maximum Health and weapon damage by 2% until you die. Stacks up to 12 times.