Phyrexian Metamorph

• WWizards of the Coast2011-06-01
  Official Ruling
  If Phyrexian Metamorph somehow enters at the same time as another permanent (due to Mass Polymorph or Liliana Vess's third ability, for example), Phyrexian Metamorph can't become a copy of that permanent. You may choose only a permanent that's already on the battlefield.
• WWizards of the Coast2011-06-01
  Official Ruling
  If the chosen creature is copying something else (for example, if the chosen creature is a Clone), then your Phyrexian Metamorph enters as whatever the chosen creature copied, except it's also an artifact.
• WWizards of the Coast2011-06-01
  Official Ruling
  You can choose not to copy anything. In that case, Phyrexian Metamorph simply enters as a 0/0 artifact creature and is put into its owner's graveyard as a state-based action (unless something else is raising its toughness).
• WWizards of the Coast2011-06-01
  Official Ruling
  If the chosen permanent is a token, Phyrexian Metamorph copies the original characteristics of that token as stated by the effect that put the token onto the battlefield, except it's also an artifact. Phyrexian Metamorph is not a token.
• WWizards of the Coast2011-06-01
  Official Ruling
  If Phyrexian Metamorph copies a noncreature artifact, it is no longer a creature.
• WWizards of the Coast2011-06-01
  Official Ruling
  If the chosen permanent has in its mana cost (such as Protean Hydra), X is considered to be zero.
• WWizards of the Coast2011-06-01
  Official Ruling
  Except for also being an artifact, Phyrexian Metamorph copies exactly what was printed on the original permanent and nothing more (unless that creature is itself copying something or is a token; see below). It doesn't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras attached to it, or any noncopy effects that have changed its power, toughness, types, color, and so on.
• WWizards of the Coast2011-06-01
  Official Ruling
  Any "enters" abilities of the copied permanent will trigger when Phyrexian Metamorph enters. Any "as [this] enters" or "[this] enters with" abilities of the chosen permanent will also work.

Rulings via Scryfall

• U
  Unknown2026-05-16

  Kederekt Leviathan + any permanent based creature clone (Phyrexian Metamorph, Clone, Vesuvan Doppelganger, Dance of Many) has great synergy. Here's why. Cast Kederekt to bounce everything. Next turn, attack whoever has nothing in play. Then cast the clone on Kederekt, bouncing everything again. Rinse & repeat. Add in Volrath's Stronghold for even more fun. If they happen to kill one of your two bouncers, you just draw it next turn and replay it. If you add in Lightning Greaves (and have the mana to replay it every turn because you'll keep bouncing it), you can swing against zero defenses, because they won't even be able to use Maze of Ith.