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.
Increase your maximum Health by 300.
Gain a 300-Health Shield for 3s after activating Ignition.
Gain a 300-Health Shield for 3s after activating Juggernaut.
Heal for 500 after activating Soul Harvest.
Reduce your damage taken by 40% while using Juggernaut.