Polymorph is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Destroy target creature. It can't be regenerated. Its controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield, then shuffles all other cards revealed this way into their library.
Complete guide
Polymorph is one of Magic's most iconic 'chaos' spells, offering a unique way to turn a small threat into a potentially massive game-ender. Whether you are targeting your own token to cheat a titan into play or removing an opponent's commander, understanding the resolution steps is key to mastering this sorcery. Let's dive into the mechanics of this high-stakes transformation.
What it Does
Polymorph is a sorcery that targets a creature, destroys it without the possibility of regeneration, and then replaces it with the first creature card found in the controller's library. Because it destroys the creature first and then looks for a replacement, it serves as both removal and a recruitment tool. It is important to note that the card revealed from the library is put directly onto the battlefield, not cast, which bypasses timing restrictions and mana costs.
Resolution Step-by-Step
First, the spell targets a creature. Upon resolution, the creature is destroyed and cannot be regenerated. Second, the controller of that creature reveals cards from the top of their library one by one. This continues until a creature card is revealed. Third, that creature card is put onto the battlefield under its owner's control. Finally, all other cards revealed during this process are shuffled back into the library. If the creature was indestructible, it stays on the battlefield, but the controller still reveals cards and puts a new creature into play regardless.
Common Mistakes
One common error is trying to resolve the effect after the target has been removed in response. If the targeted creature leaves the battlefield before Polymorph resolves, the entire spell fails and no one reveals any cards. Another mistake involves libraries with no creatures; if a player has no creature cards left, the target is still destroyed, the entire library is revealed and then shuffled, but no new creature enters the battlefield. Remember, 'creature cards' include any card with the creature type, including artifact creatures or enchantment creatures.
When to Play It
Polymorph is best used in 'Build-Around' decks where you only run one or two massive creatures and fill the rest of the deck with non-creature spells that generate tokens. This ensures that when you Polymorph your own token, you are guaranteed to hit a powerhouse. Alternatively, it can be used defensively to remove an opponent's unstoppable threat, though you risk giving them something even more dangerous from their library.
Interaction examples
Callidus AssassinIf you use Polymorph and reveal Callidus Assassin, it enters the battlefield. You may choose to have it enter as a copy of any creature currently on the battlefield. Because it enters as a copy, its 'Polymorphine' ability triggers, allowing you to destroy another creature with the same name as the one it copied. This creates a double-removal swing or doubles up on a powerful ability.
FabricateImagine you have a deck where the only creature card is a massive artifact creature. You can use Fabricate to search for a non-creature artifact to generate a token or utility. Once you have a token on board, casting Polymorph on that token guarantees you hit your one massive creature, as it is the only legal card to stop the reveal process in your library.
WindfallAfter you use Polymorph to put a high-cost creature onto the battlefield for just four mana, you might find your hand size is low compared to your opponent. Casting Windfall afterward can help you refill your hand based on the opponent's cards, ensuring you have the resources to protect your newly 'Polymorphed' threat.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Polymorph
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If the targeted creature has indestructible, it’s still a legal target — it just isn’t destroyed. The rest of Polymorph’s effect happens as normal.
No other card is named in this ruling.
- #2· Wizards of the Coast
If the targeted creature is an illegal target by the time Polymorph would resolve, the entire spell doesn’t resolve. Nothing else happens.
No other card is named in this ruling.
- #3· Wizards of the Coast
If there are no creature cards in the player’s library, all the cards in that library are revealed, then the library is shuffled. (The targeted creature remains destroyed.)
No other card is named in this ruling.
- #4· Wizards of the Coast
A “creature card” is any card with the type creature, even if it has other types such as artifact, enchantment, or land. Older cards of type summon are also creature cards.
No other card is named in this ruling.
- #5· Wizards of the Coast
If there are no creatures in the player’s library, then the target creature is still destroyed, you see all the cards in that player’s library, and then they shuffle and continue play.
No other card is named in this ruling.
Interactions with other cards
These cards' text mentions Polymorph.
Legal formats
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