Vengeful Possession

• WWizards of the Coast2024-09-20
  Official Ruling
  If the target creature is an illegal target when Vengeful Possession tries to resolve, it won't resolve and none of its effects will happen. You won't have the option to discard a card in order to draw a card.
• WWizards of the Coast2024-09-20
  Official Ruling
  Gaining control of a creature doesn't cause you to gain control of any Auras or Equipment attached to it.
• WWizards of the Coast2024-09-20
  Official Ruling
  Vengeful Possession can target any creature, even one that's untapped or one you already control.

Rulings via Scryfall