Dragon's Breath (poison)

You touch one willing creature and imbue it with the power to spew magical energy from its mouth, provided it has one. Until the spell ends, the creature can use an action to exhale energy of the poison in a 15-foot cone. Each creature in that area must make a Dexterity saving throw, taking 3d6 damage of the chosen type on a failed save, or half as much damage on a successful one.

Made for the homebrewing other items to only be cast at 2nd level.