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.
Heal for 100 after activating Soul Harvest.
Heal for 150 for each champion hit by Juggernaut.
Increase your Reload Speed by 35%.
Increase your maximum Health by 750.
Increase your Ultimate charge rate by 60%.