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.
Each Soul Fragment gathered Heals you for 45.
Gain a 450-Health Shield for 3s after activating Juggernaut.
Gain a 750-Health Shield for 3s after dropping to or below 30% Health.
Gain a 200-Health Shield for 3s after activating Ignition.
Heal for 400 after activating Soul Harvest.
All your living allies are Healed for 1.5% of their maximum Health for each Soul Harvested.