Prerequisites: Poisoner’s kit proficiency
As an action, you expend a Maneuver Die and use a poisoner’s kit to craft one vial of Minor Poison.
It retains potency until the end of your next long rest, but you cannot regain this Maneuver Die until this Minor Poison is spent.
With the Use an Object action, a creature can apply the vial of poison to a weapon or piece of ammunition. On its next hit, its damage type is changed to poison, and its target must make a Constitution saving throw or be Poisoned for 1 minute.
The Poisoned creature can repeat this saving throw at the end of each of its turns, ending the effect on a success.