Biomancer's Grasp

Choose a humanoid that you can see in range. The target must succeed a constitution saving throw. If it fails, the target loses all temporary hit points and becomes restrained for the duration or until you end concentration early. You gain temporary hit points equal to the temporary hit points the target lost. If it succeeds, the target is dealt 1d12 acid damage and you gain temporary hit points equal to twice the damage dealt this way. The temporary hit points last for eight hours.

At higher levels. When you cast this spell using a spell slot of 3rd or higher, you can target an additional humanoid for each spell slot above 2nd.