Garrotting Gas

This gas produces a choking or suffocating sensation, which, given the fact it’s colorless, can be quite dangerous. A creature that inhales this poison must succeed on a DC 13 Constitution saving throw or be poisoned for 1 hour. If the saving throw fails by 5 or more, the creature is unconscious while poisoned in this way. The creature wakes up if it takes damage or a creature shakes it awake as an action.

As an action, you can throw a bottle of Garrotting Gas at a point up to 60 feet away, releasing the gas and exposing creatures within 5 feet of that point.