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 75.
Reduce your damage taken by 20% for 3s after activating Soul Harvest.
Reduce your damage taken by 3% for 3s after activating Ignition.
Heal for 150 for each champion hit by Juggernaut.
Increase your maximum Health by 600.
All your living allies are Healed for 1.5% of their maximum Health for each Soul Harvested.