Badberry

Up to ten nasty berries appear in your hand and are infused with foul magic for the duration. A creature can use its action to eat one berry. Eating a berry removes 1 hit point, and the berry causes you to lose your appetite for a whole day, resulting in one point of exhaustion.

The berries stink to the Nine Hells and rot into brown mist if they have not been consumed within 24 hours of the casting of this spell.