Manifold Mouse 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
Offspring(You may pay an additional
as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) At the beginning of combat on your turn, target Mouse you control gains your choice of double strike or trample until end of turn.
Complete guide
Manifold Mouse is a versatile addition to any Mouse-themed deck, offering a powerful choice between keywords to push damage through. With its Offspring ability, you can double your combat buffs for just two extra mana.
What Manifold Mouse Does
Manifold Mouse is a two-mana creature that grants a target Mouse you control either double strike or trample at the start of your combat. If you pay the optional Offspring cost of {2} when casting it, it enters the battlefield and creates a 1/1 token copy of itself. Since both the original and the token have the combat trigger, you can target two different Mice or stack two different keywords on a single Mouse.
How it Resolves Step by Step
First, you cast Manifold Mouse, choosing whether to pay the {2} Offspring cost. If the spell resolves, the creature enters the battlefield, and if the Offspring cost was paid, a triggered ability goes on the stack to create a 1/1 token. At the beginning of combat on your turn, each Manifold Mouse you control puts a separate trigger on the stack. You choose a target Mouse for each trigger, then choose between double strike or trample as those triggers resolve.
Common Mistakes to Avoid
Remember that the Offspring ability is an 'enters' trigger; if the spell is countered, you don't get a token even if you paid the extra mana. Additionally, the token created by Offspring is not 'cast,' so it won't trigger effects that look for spells being cast. Finally, if you have two triggers from two different Manifold Mouse copies, you must choose the mode (double strike or trample) as each ability resolves, not when they are first put on the stack.
When to Play Manifold Mouse
This card is most effective when you have other Mice on the board that can benefit from evasion or extra damage. In a turn where you want to maximize damage, use the Offspring cost to ensure you have two separate instances of the keyword-granting ability, allowing you to turn a small board state into a lethal threat.
Interaction examples
If you have the original Manifold Mouse and its Offspring token on the field, at the start of combat, two triggers go on the stack. You may target the original Manifold Mouse with both triggers. As they resolve, you can choose double strike for the first and trample for the second, resulting in a creature that hits twice and carries over excess damage to the opponent.
When combat begins, you check for legal targets for the Manifold Mouse trigger. Professional Face-Breaker is a Human Warrior, not a Mouse. Therefore, Manifold Mouse cannot target it to grant it double strike or trample. The target must have the Mouse creature type.
You can use Ornithopter of Paradise to produce one mana of any color to help pay for the {1}{R} casting cost or the {2} Offspring cost. If you use it to help pay the total of {3}{R}, you will successfully create the 1/1 token copy when the Mouse enters the battlefield.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Manifold Mouse
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
In the rare case where the creature doesn’t have the offspring ability when it enters, the ability won’t trigger even if you paid the offspring cost.
No other card is named in this ruling.
- #2· Wizards of the Coast
You can pay an offspring cost only once as you cast a spell with offspring. You can’t try to pay it multiple times to get more token copies.
No other card is named in this ruling.
- #3· Wizards of the Coast
If the spell is countered, the offspring ability will not trigger, and no token will be created.
No other card is named in this ruling.
- #4· Wizards of the Coast
If the spell resolves but the creature with offspring leaves the battlefield before the offspring ability resolves, you’ll still create a token copy of it.
No other card is named in this ruling.
- #5· Wizards of the Coast
The token copies exactly what was printed on the original creature and nothing else, except it’s a 1/1 (unless that creature is copying something else; 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 types, color, or so on.
No other card is named in this ruling.
- #6· Wizards of the Coast
In the rare case where the original creature is copying something else when the offspring ability resolves, the token enters as whatever that creature copied, except it’s a 1/1.
No other card is named in this ruling.
- #7· Wizards of the Coast
Many creatures with offspring abilities have other abilities that refer to them as “this creature” rather than referring to them by name. This difference is for clarity purposes and does not change the function of any of these abilities.
No other card is named in this ruling.
- #8· Wizards of the Coast
Any “enters” abilities of the copied creature will trigger when the token enters. Any “as [this creature] enters” or “[this creature] enters with” abilities of the copied creature will also work.
No other card is named in this ruling.
- #9· Wizards of the Coast
The token created by the offspring ability isn’t “cast”, so abilities that trigger when a creature spell is cast won’t trigger for the copy.
No other card is named in this ruling.
Related cards and tokens
Legal formats
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Meta decks with Manifold Mouse
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Manifold Mouse
Professional Face-Breaker
Ornithopter of Paradise