You do not consume Ammo for 1s after hitting an enemy with Poison Bolts.
Level 2
Twilight Armor
Armor
Increase your maximum Ammo by 6.
Level 3
Cloak
Hidden
Increase the duration of Hidden by 4s.
Level 4
Nimble Fingers
Poison Bolts
Increase your Reload Speed by 20% for 5s after using Poison Bolts.
Level 2
Smoke and Dagger
Smoke Screen
Benefits from your Smoke Screen cards also benefit allies who enter Smoke Screen and allies are Healed for 100 every 1s while in your Smoke Screen, but Smoke Screen no longer applies Stealth to you.