Killing Blows reset your Cooldowns and Heal you for 500.
Increase your Movement Speed by 8-40% for 2s after entering Smoke Screen.
You do not consume Ammo for 0.5-2.5s after hitting an enemy with Poison Bolts.
Heal for 125-625 over 2s while in Smoke Screen.
Increase your Movement Speed by 5-25% while Hidden is active.
Automatically enter Stealth after dropping to or below 30% Health. This can happen once every 25-5s.
If get a kill you get a reset. this is better for flanking to get the speed and get the kill. Preparation is on there to give you the reset when you get the kill to either the get another kill or to back out. Emergency exit it when you in to deep and about to die.