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.
Reduce your active Cooldowns by 50% when you get an Elimination.
Hitting an enemy with Crippling Arrow reduces the Cooldown of Rapid Shot by 2.4s.
Reduce the Cooldown of Rapid Shot by 0.6s.
Increase your maximum Health by 50.
Reduce the Movement Speed penalty while drawing your Longbow by 80%.
Increase the rate at which your Longbow charges by 25%.