Big Mother Mouser
Big Mother Mouser: Artifact Creature - Robot, Teenage Mutant Ninja Turtles Eternal. This creature enters with two +1/+1 counters on it. On Mana Grove.
- Mana cost
- {4}
- Mana value
- 4
- Type
- Artifact Creature - Robot
- Colour identity
- Colourless
- Power / toughness
- 0/0
- Rarity
- Rare
- Set
- Teenage Mutant Ninja Turtles Eternal (TMC)
- Released
- 2026-03-06
- Collector number
- 37
- Artist
- Miklós Ligeti
- Keywords
- Double
Build around this card with Grover
About Big Mother Mouser
Big Mother Mouser is a Magic: The Gathering card, a rare colourless artifact creature from Teenage Mutant Ninja Turtles Eternal (TMC), released in March 2026. It is collector number 37 in that set, with art by Miklós Ligeti. It costs {4} (four generic mana) to cast, for a mana value of 4. It is a 0/0 creature. It has no colour identity. It is legal in Legacy, Vintage, Commander, Duel Commander, Oathbreaker and Gladiator. Teenage Mutant Ninja Turtles Eternal is its only printing so far. The latest aggregated market price for this printing is $1.16 (normal finish, as of 2026-10-23).
Card text
This creature enters with two +1/+1 counters on it.
Whenever this creature attacks, double the number of +1/+1 counters on it.
When this creature dies, create a number of 1/1 colorless Robot artifact creature tokens equal to the number of +1/+1 counters on this creature.
Market price
Latest aggregated market price for the normal finish of this printing: $1.16 (as of 2026-10-23).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Big Mother Mouser by format. Formats in which it is not legal are not listed.
| Legacy | Legal |
|---|---|
| Vintage | Legal |
| Commander | Legal |
| Duel Commander | Legal |
| Oathbreaker | Legal |
| Gladiator | Legal |
Other printings of Big Mother Mouser
The other printings are listed newest first, with the rarity and release year of each.
| Printing | Rarity | Year |
|---|---|---|
| Teenage Mutant Ninja Turtles Eternal (TMC) #97 | Rare | 2026 |
Official rulings
Two official rulings apply to Big Mother Mouser, newest first.
- To double the number of +1/+1 counters on a creature, put a number of +1/+1 counters on it equal to the number it already has. Other cards that interact with putting counters on it will interact with this effect accordingly.
- If enough -1/-1 counters are put on Big Mother Mouser at the same time to make its toughness 0 or less (or the damage marked on it to be lethal), the number of +1/+1 counters on it before it got any -1/-1 counters will be used to determine how many Robot tokens you get. For example, if there are three +1/+1 counters on Big Mother Mouser and it gets four -1/-1 counters, you'll get three Robot tokens. That's because Big Mother Mouser's last ability checks Big Mother Mouser's existence just before it leaves the battlefield, and it still has all those counters on it at that point.
Similar cards
Other artifact creature cards with no colour identity, ranked by how often they appear in Commander decks.