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Rules guide · Creature

CosmogoyfHow it works & interactions with other cards

By the ManaCount desk· 3 min read· Edge of Eternities· August 1, 2025
Carte Magic Cosmogoyf

Cosmogoyf 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.

01

Official card text

Cosmogoyf's power is equal to the number of cards you own in exile and its toughness is equal to that number plus 1.

Complete guide

Meet Cosmogoyf, a cosmic twist on a classic Magic creature type that feeds on the void rather than the graveyard. This Elemental Lhurgoyf scales its strength based on how many resources you have tucked away in the exile zone. Whether you are playing against decks that exile your cards or using exile as a resource yourself, this creature can become an astronomical threat.

Understanding the Exile Scale

Cosmogoyf features a characteristic-defining ability that sets its power and toughness based on the number of cards you own in exile. Unlike many creatures that check the graveyard, Cosmogoyf looks specifically at the zone where cards often go when they are removed from the game. Its power is exactly equal to that count, while its toughness is always one point higher, ensuring it survives even if you have no cards in exile.

Zone Consistency and Resolution

The ability that defines Cosmogoyf's stats is always active, meaning it functions in your hand, in your library, in the graveyard, and on the battlefield. Most importantly, if Cosmogoyf itself is in exile, its ability still functions and will count itself toward its own power and toughness calculations. There is no 'resolution' for this effect as it is a static ability that updates continuously as the number of cards in exile changes.

Common Mistakes to Avoid

A frequent error is forgetting that Cosmogoyf only counts cards you 'own' in exile. If you exile an opponent's card, it does not contribute to your Cosmogoyf's power. Additionally, remember that face-down exiled cards are still cards in exile and will be counted. Because the power and toughness are tied to the zone count, a sudden change—like a card being returned from exile to the battlefield or hand—will immediately update Cosmogoyf's stats, potentially causing it to die if its toughness drops to zero or less.

Strategic Deployment

Cosmogoyf is best played in decks that utilize mechanics like Delve, Cascade, or Suspend, which naturally move cards into the exile zone. Since it only costs two mana, it can be played early as a small blocker or held until the late game when it can arrive as a massive finisher. It is particularly resilient against 'Exile' removal spells, as being sent to exile only makes other copies of Cosmogoyf in your deck or hand stronger.

Interaction examples

Early Game Presence

On turn one, you play Birds of Paradise. On turn two, you tap it for black mana and use a land for green to cast Cosmogoyf. If no cards have been exiled yet, Cosmogoyf enters as a 0/1 creature. While it cannot deal damage yet, it is safely on the board waiting for cards to enter the exile zone.

Mana Acceleration and Growth

You have a Llanowar Elves on the battlefield and two cards of yours have been exiled by an opponent's spell. You cast Cosmogoyf. Because there are two cards you own in exile, Cosmogoyf is currently a 2/3. If your opponent then casts a spell that exiles your Llanowar Elves, the count of cards you own in exile increases to three, and Cosmogoyf immediately grows to a 3/4.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Cosmogoyf

Original English text — Wizards of the Coast / Scryfall

  1. #1· Wizards of the Coast

    The ability that defines Cosmogoyf’s power and toughness works in all zones, not just the battlefield. If Cosmogoyf is in exile, its ability will count itself.

    No other card is named in this ruling.

02

Popular combos

Real combos played by the community, sorted by popularity.

Jarad, Golgari Lich Lord
+Cosmogoyf
+Demonic Consultation
#1

Jarad, Golgari Lich Lord + Cosmogoyf + Demonic Consultation

Near-infinite lifelossExile your library
  1. 1Cast Demonic Consultation by paying {B}, naming a card not in your library and exiling your library.
  2. 2Activate Jarad by paying {1}{B}{G} and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power.
Jarad, Golgari Lich Lord
+Cosmogoyf
+Phyrexian Devourer
#2

Jarad, Golgari Lich Lord + Cosmogoyf + Phyrexian Devourer

Near-infinite damageNear-infinite lifelossExile your library
  1. 1Activate Phyrexian Devourer by exiling the top card of your library.
  2. 2Repeat step 1 until your library is empty or the number of cards you own in exile is equal to or greater than each opponent's life total.
  3. 3Activate Jarad by paying {1}{B}{G} and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power.
  4. 4Activate Phyrexian Devourer's second ability by exiling the top card of your library, causing you to put a number of +1/+1 counters on Phyrexian Devourer equal to that card's mana value.
  5. 5Repeat step 1 until Phyrexian Devourer's power is greater than each opponent's life total.
  6. 6Phyrexian Devourer's first ability triggers.
  7. 7Holding priority, activate Jarad by paying {1}{B}{G} and sacrificing Phyrexian Devourer, causing each opponent to lose life equal to Phyrexian Devourer's power.
Jarad, Golgari Lich Lord
+Cosmogoyf
+Leveler
#3

Jarad, Golgari Lich Lord + Cosmogoyf + Leveler

Near-infinite lifelossExile your library
  1. 1Cast Leveler by paying {5}.
  2. 2When Leveler enters, it triggers, exiling your library.
  3. 3Activate Jarad by paying {1}{B}{G} and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power.
Cosmogoyf
+Jarad, Golgari Lich Lord
+Arc-Slogger
#4

Cosmogoyf + Jarad, Golgari Lich Lord + Arc-Slogger

Near-infinite lifelossExile your library
  1. 1Activate Arc-Slogger by paying {R} and exiling the top 10 cards of your library, dealing 2 damage to any target.
  2. 2Repeat step 1 as desired. It is recommended to do this until your library is empty or until the amount of cards you own in exile is greater than or equal to each opponent's life total, whichever comes first.
  3. 3Activate Jarad by paying {1}{B}{G} and sacrificing Cosmogoyf, causing each opponent to lose life equal to Cosmogoyf's power.
03

Legal formats

standardfuturehistorictimelessgladiatorpioneermodernlegacyvintagecommanderoathbreakerstandardbrawlbrawlcompetitivebrawlalchemydueltlr
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