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.
Increase your maximum Health by 750.
Gain a 750-Health Shield for 3s after dropping to or below 30% Health.
Gain a 150-Health Shield for 3s after activating Juggernaut.
Heal for 150 for each champion hit by Juggernaut.
Heal for 500 after activating Soul Harvest.
Reduce your damage taken by 40% while using Juggernaut.