Clutch of Orcus

One humanoid of your choice that you can see within range begins to suffer a magic-induced heart attack. The target must succeed on a Constitution saving throw or take 3d8 necrotic damage and be stunned for the duration. At the end of each of its turns, the target repeats the saving throw. It takes 3d8 necrotic damage on a failed save, and the spell ends on the target on a successful one.