Swarm of Ravens

The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny creature. The swarm can't regain Hit Points or gain Temporary Hit Points.

Melee Weapon Attack: +4 to hit, reach 5 ft., one target in the swarm's space. Hit: 7 (2d6) piercing damage, or 3 (1d4) piercing damage if the swarm is Bloodied.

The swarm emits a cacophony of raucous noise. Each creature in the swarm's space must make a DC 10 Wisdom saving throw. On a failure, the target has the Deafened condition until the start of the swarm's next turn. While Deafened, the target also has Disadvantage on ability checks and attack rolls.