Crimson Chains of Carceri

You call upon the might of Carceri, the infinite prison plane, and form chains of spectral energy to bind your foes. Choose up to five creatures you can see within range. Make a ranged spell attack against each target. On a hit, the target is restrained for the spells duration and takes 6d8 necrotic damage. On each of your turns for this spell's duration, you can use your action to deal 6d8 necrotic damage to the restrained creatures automatically. The spell ends if you use your action to do anything else. The spell also ends if the target is ever outside the spell’s range or if it has total cover from you.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, you may target an additional creature for each slot level above 5th.