You do not consume Ammo for 1s after hitting an enemy with Poison Bolts.
Level 2
Healing Vapors
Smoke Screen
Heal for 375 over 2s while in Smoke Screen.
Level 3
Slip Away
Armor
Increase your Movement Speed by 28% while Out of Combat.
Level 4
Preparation
Armor
When activating Hidden, refill Wrist Crossbow's Ammo. While Hidden is active, reduce the damage you take by 75%, but reduce the maximum duration of Hidden to 3s. The duration of Hidden cannot be increased.