Conjure Swarm

You summon a swarm of beasts that appears in a space you can see within range. The beasts in the swarm are also considered as fey, and they disappear when the swarm drops to 0 hit points or when the spell ends. The summoned swarm is friendly towards you and your companions. Roll initiative for the swarm, which has it's own turns. It obeys any verbal the commands that you issue to it (no action required by you). If you don't issue any commands to the swarm, it defends itself from hostile creatures, but otherwise takes no actions.

The DM has the swarm's statistics.