Bad Blood

You attempt to corrupt the blood of a creature you can see within range. Creatures without blood are immune to this effect. The target must make a Constitution saving throw. On a failure, it takes 1d12 poison damage and becomes poisoned for the duration.

At the end of each of its turns, the target can make another Constitution saving throw. On a success, the spell ends on the target. On a failure, it takes an additional 1d4 poison damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target an additional creature for each slot level above 2nd. All targets must be within 30 feet of each other when you target them.