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.
Heal for 150 for each champion hit by Juggernaut.
Gain a 500-Health Shield for 3s after dropping to or below 30% Health.
Increase your maximum Health by 300.
Heal for 500 after activating Soul Harvest.
Reduce your damage taken by 40% while using Juggernaut.