Dance Massacre

The foulest stench's in the air
The funk of forty thousand years
And grizzly ghouls from every tomb
Are closing in to seal your doom 
And though you fight to stay alive
Your body starts to shiver
For no mere mortal can resist
The evil of the thriller" - Vincent Price

Choose a number of creatures equal to your Charisma or Dexterity Modifier in a 30 feet sphere around you. They must make a Wisdom Saving Throw or take 2d8 Necrotic damage and 2d8 Psychic Damage. On a success, they take half damage. They then are compelled to dance, and must make a Wisdom Saving Throw at the start of each of their turns or else their movement speed is reduced to 0. If the target is killed while you are concentrating on this spell, they do not die, instead remaining dancing, but unable to take any action, bonus actions, or reactions, and automatically fail the Wisdom Save until the spell ends, where they fall, then swiftly decay as though 6 months had passed.