Omni-Changeling

three generic mana one blue mana Creature — ShapeshifterPower and toughness0/0

Changeling (This card is every creature type.)

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for one generic mana or one mana of that creature's color.)

You may have this creature enter as a copy of any creature on the battlefield, except it has changeling.

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7 printings

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Omni-Changeling rulings

2025-11-17
If an effect causes a creature with changeling to become a new creature type, it will be only that new creature type (unless the effect says "in addition" or similar). It will still have changeling; the effect making it all creature types will simply be overwritten.
2025-11-17
The subtype Shapeshifter that appears on the type line is mostly there to reinforce the flavor. A creature card with changeling is just as much a Kithkin, a Goblin, a Merfolk, and a Brushwagg as it is a Shapeshifter.
2025-11-17
You can tap any untapped creature you control to convoke a spell, even one you haven't controlled continuously since the beginning of your most recent turn.
2025-11-17
Any "enters" abilities of the copied creature will trigger when Omni-Changeling enters. Any "as this creature enters" or "this creature enters with" abilities of the copied creature will also work.
2025-11-17
Omni-Changeling copies exactly what was printed on the original creature and nothing else, with the listed exception (unless that creature is copying something else or is a token; see below). It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
2025-11-17
Changeling is a characteristic-defining ability. It functions in all zones, not only while a card that has it is on the battlefield.
2025-11-17
If the copied creature is copying something else, then Omni-Changeling enters as whatever that creature copied, with the listed exception.
2025-11-17
If a creature you control has a mana ability with in the cost, activating that ability while casting a spell with convoke will result in the creature being tapped before you pay the spell's costs. You won't be able to tap it again for convoke. Similarly, if you sacrifice a creature to activate a mana ability while casting a spell with convoke, that creature won't be on the battlefield when you pay the spell's costs, so you won't be able to tap it for convoke.
2025-11-17
When calculating a spell's total cost, include any alternative costs, additional costs, or anything else that increases or reduces the cost to cast the spell. Convoke applies after the total cost is calculated. Convoke doesn't change a spell's mana cost or mana value.
2025-11-17
If the copied creature is a token, Omni-Changeling copies the original characteristics of that token as stated by the effect that created that token, with the listed exception.
2025-11-17
Tapping an untapped creature that's attacking or blocking to convoke a spell won't cause that creature to stop attacking or blocking.
2025-11-17
If the copied creature has in its mana cost, X is 0.
2025-11-17
If an effect causes a creature with changeling to lose all abilities, it will remain all creature types, even though it will no longer have changeling. This is because changeling applies before the effect that removes it.
2025-11-17
You can choose not to have Omni-Changeling enter as a copy of another creature. If you do, it will just be a 0/0 Shapeshifter with changeling, and unless another effect is increasing its toughness, it will be put into its owner's graveyard.

Omni-Changeling keyword rules

Convoke Rule 702.51

Convoke is a static ability that functions while the spell with convoke is on the stack. “Convoke” means “For each colored mana in this spell’s total cost, you may tap an untapped creature of that color you control rather than pay that mana. For each generic mana in this spell’s total cost, you may tap an untapped creature you control rather than pay that mana.”

The convoke ability isn’t an additional or alternative cost and applies only after the total cost of the spell with convoke is determined.

A creature tapped to pay for mana in a spell’s total cost this way is said to have “convoked” that spell.

Multiple instances of convoke on the same spell are redundant.

Changeling Rule 702.73

Changeling is a characteristic-defining ability. “Changeling” means “This object is every creature type.” This ability works everywhere, even outside the game. See rule .