The fact your own identity can slip away is horror!
PHNI-JP070 突然回帰 Back Mutation
Normal Spell Card
You can only activate 1 card with this card’s name once per turn.
(1) Tribute 1 Fusion or Synchro Monster; Special Summon 1 monster with the same original Level from your Deck, but return it to the hand during the End Phase.
Note: This card is a reference to Metamorphosis.
Note: This card’s Kanji means “Sudden Regression”