Edison format ruling
Metamorphosis
Card effect (current official text)Tribute 1 monster. Special Summon 1 Fusion Monster from your Extra Deck with the same Level as the Tributed monster.
Rulings
- Metamorphosis does not properly Summon a Fusion Monster, so you cannot use Monster Reborn on it afterwards.
- Tributing a monster is a cost.
- You can Tribute a face-down monster.
- If you activated "Soul Exchange" targeting your opponent’s monster, if the monster is face-down, you cannot Tribute it as a cost for "Metamorphosis".
- You can Tribute a Monster Token (including a Sheep Token from Scapegoat).
- If there is no Fusion Monster with the same level as the Tributed monster in your Extra Deck, then you cannot activate this card.
- Metamorphosis vs. A Legendary Ocean: if you want to Special Summon a Level 6 Fusion Monster from your Extra Deck, you have to Tribute a Level 7 WATER monster on the field because it is treated as a Level 6.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.