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.
Heal for 40 every 1s while Agility is active.
Heal for 80 after activating Shadow Step.
Increase your maximum Ammo by 20.
Increase your maximum Health by 100.
Regenerate 20 Ammo every 1s while Agility is active.