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 the area of effect of all your explosions by 10%.
Increase your maximum Health by 50.
Heal for 120 for each use of Explosive Personality.
Increase the explosion radius of Hail of Bombs' explosives by 40%.
Increase the vertical movement from each use of Explosive Personality by 40%.