Copper Draconic Bellows

Slowing Gas. You can use these bellows to blow a magical gas in a 20ft. cone. All creatures in the area have to make a Constitution saving throw (DC 14). On a failed save, a creature can't use reactions, its speed is halved, and it can't make more than one attack on its turn. In addition, the creature can use either an action or a bonus action on its turn, but not both. These effects last for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself with a successful save. This feature can be used once, after you use it, roll a d20. On a 1, the bellows break beyond repair. If it does not break, the bellows regains its use at midnight.