Trembling bones

You target up to 3 loose bones within range which can be in a corpse. The bones begin to float ready to strike your opponents for the duration or until you cast this spell again. They do not occupy their space and can move through spaces with other creatures inside. When you cast the spell, you can make a melee spell attack using each of the bones against a creature within 5 feet of them. On a hit, the target takes bludgeoning damage equal to 1d4 + your spellcasting ability modifier.

As an action on your turn, you can move each of the bones up to 20 feet and repeat the attacks against a creature within 5 feet of each of them. You can move and attack using the bones independently and you decided the order in which the bones move and attack.

At Higher Levels. When you cast this spell using a spell slot of 4rd level or higher, the bones deal 1d6 additional necrotic damage on a hit for every two slot levels above 2nd.