Devourers Swarm

You summon a swarm of hungry arcane bats. Choose up to 3 creatures you can see within range. If you choose multiple creatures, they must be within 10 feet of each other. A target must succeed on a Dexterity saving throw or take 1d8 acid damage.

This spell’s damage increases by 1d8 when you reach 5th level(2d8), 11th level(3d8), and 15th level(4d8).