As a Magic action, you can release a cloud of multi-hued smoke in a 20-foot Emanation. Each creature you choose within the Emanation must succeed on a Wisdom saving throw against your spell save DC or have the Poisoned condition for 1 minute. At the end of each of its turns, a Poisoned creature repeats the save, ending the effect on itself on a success.
Once you use this feature, you can't use it again until you finish a Short or Long Rest.