Swarm of Dread

You transform a willing creature you touch, along with everything it is wearing and carrying, into a swarm of Tiny creatures.

While in this form, the target gains a flying speed of 50 ft., gains resistance to Bludgeoning, Piercing, and Slashing damage, and is immune to the Grappled, Prone, and Restrained conditions. The swarm can occupy another creature's space, and vice versa, and can move through any opening large enough for a Tiny creature.

While in this form, the target cannot talk or manipulate objects, and any objects it was carrying or holding cannot be dropped, used, or otherwise interacted with. The target can use their action to Dash, Disengage, Dodge, Hide, Help, or Search for the duration. Any creature that starts its turn in the swarm's space must make a Dexterity saving throw - on a failure, the target takes 2d6 piercing damage, or half as much on a success. While the spell is active, the transformed target can use a bonus action to return to its original form, or back into a swarm of Tiny creatures.