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 the Cooldown of Rapid Shot by 1.2s.
Hitting an enemy with Crippling Arrow reduces the Cooldown of Rapid Shot by 1.2s.
Reduce the Cooldown of Crippling Arrow by 1.2s.
Reduce your active Cooldowns by 40% when you get an Elimination.
Reduce the Cooldown of Withdraw by 3s.
Increase the rate at which your Longbow charges by 25%.