Yuji, Finger Eater

Haste, Menace
When this creature enters, put a -1/-1 counter on target Demon Spirit, Demon Avatar, or Shikigami

The Curse of the Finger — When Yuji deals combat damage to a player you may pay {b}{r} and sacrifice an artifact named 'The First Finger of Sukuna' if you do, exile Yuji, then return him to the battlefield transformed under his owners control.