Once on each of your turns, you can cause the swarm to assist you in
one of the following ways, immediately after you hit a creature with an
attack:
- The attack's target takes 1d6 piercing damage from the swarm.
- The attack's target must succeed on a Strength saving throw against your spell save DC or be moved by the swarm up to 15 feet horizontally in a direction of your choice.
- You are moved by the swarm 5 feet horizontally in a direction of your choice.