Concussive Blast (MM)

Any target hit by 3 or more darts must make a Constitution save. On a failure, it becomes Dazed until the end of its next turn. On a save that fails by 10 or more, it becomes Stunned until the end of its next turn. If the save succeeds by 5 or more, it takes half damage from the spell. The Dazed condition is described in Appendix II of the Dragonlance campaign setting or at the end of this spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell creates one more dart for each slot level above 1st.

Dazed: A dazed creature can't take reactions. Also, on its turn, it can take only an action or bonus action, not both. It has disadvantage on saves against being stunned.