Toxic Dagger Swarm

You create six floating poisonus daggers in your space. They float in the air and orbit you for the spell’s duration. When you cast the spell — and as a bonus action on each of your turns thereafter — you can expend one or two of the daggers, sending them streaking toward a point or points you choose within 60 feet of you. Once a dagger reaches its destination or impacts against a solid surface, the dagger explodes in a toxic cloud. Each creature within 5 feet of the point where the dagger explodes must make a Constitution saving throw. A creature takes 1d12 poison damage on a failed save and is posioned for 1 round. On a successful save the creature is only poisoned for 1 round and takes no damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the number of daggers created increases by two for each slot level above 3rd.