Animus' Dancing Bones

You channel necromantic energy into your living victims, causing their skeletons to convulse violently. Up to three creatures of your choice that have skeletons within range make a Constitution saving throw. A target takes 6d6 necrotic damage on a failed save, or half as much damage on a successful one.

If this reduces the creature to 0 hit points, their skeleton violently bursts out of them, animating their skeleton (DM has stats) and killing them instantly. The skeleton is hostile towards all creatures, including you, except for other skeletons created by this spell.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you may select an additional target for each slot level above 3rd.