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.
Activating Fire Bomb heals you for 200 over 2s.
Increase your maximum Health by 200.
Heal for 180 for each enemy hit with Nade Launcher.
Heal for 600 after getting a Killing Blow on an enemy affected by Hunter’s Mark.
Reduce the damage you deal to yourself with Fire Bomb by 60%.
Nade Launcher has 3 charges, but reduce the damage of each to 650.