Big Mother Mouser
Tracked across real Commander games played through TurnZero HQ.
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What it does
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.
Combos with Big Mother Mouser
The lines this card is part of, what it needs alongside it, and what the cards do together. An infinite result is the one that moves a deck's bracket.
- Sage of Hours Resourceful Defense Infinite
- Infinite turns
- Lock
- Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight Ashnod's Altar Infinite
- Infinite creature ETB
- Infinite creature LTB
- Infinite colorless mana
- Infinite creature tokens
- Infinite death triggers
- Infinite creature sacrifice triggers
- Chrome Dome Krark-Clan Ironworks Infinite
- Infinite artifact ETB
- Infinite artifact LTB
- Infinite artifact sacrifice triggers
- Infinite creature ETB
- Infinite creature LTB
- Infinite colorless mana
- Infinite copies of artifacts you control with haste
- Infinite creature tokens with haste
- Infinite death triggers
- Infinite creature sacrifice triggers
Combo data from Commander Spellbook, the community-maintained database of Magic combos. Mirrored nightly.
Rulings
2 official rulings, in the order Wizards published them.
- 2026-01-27
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.
- 2026-01-27
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.
Rulings are Wizards of the Coast's own, mirrored from Scryfall and refreshed nightly.
In the 99
Every deck whose current list includes Big Mother Mouser, whatever its commander.
Most played under
| Commander | Decks | Games | Win rate |
|---|---|---|---|
| Heroes in a Half Shell | 4 | 0 | — |
| Ramos, Dragon Engine | 1 | 0 | — |
Colors it shows up in
- Five-Color 5 decks
Big Mother Mouser price history
The Teenage Mutant Ninja Turtles Eternal #37 printing, as Scryfall reports the TCGplayer market. Updated nightly. Click any version below to chart its price.
Every recorded price change
| Date | Non-foil |
|---|---|
| Oct 27, 2026 | $1.13 |
| Oct 26, 2026 | $1.13 |
| Oct 25, 2026 | $1.10 |
| Oct 24, 2026 | $1.14 |
| Oct 23, 2026 | $1.16 |
| Oct 22, 2026 | $1.19 |
| Oct 21, 2026 | $1.23 |
| Oct 19, 2026 | $1.28 |
| Oct 18, 2026 | $1.24 |
| Oct 17, 2026 | $1.25 |
| Oct 16, 2026 | $1.38 |
| Oct 15, 2026 | $1.40 |
| Oct 14, 2026 | $1.31 |
| Oct 13, 2026 | $1.33 |
| Oct 12, 2026 | $1.40 |
| Oct 11, 2026 | $1.42 |
| Oct 10, 2026 | $1.56 |
| Oct 9, 2026 | $1.68 |
| Oct 8, 2026 | $1.89 |
| Oct 7, 2026 | $1.92 |
| Oct 6, 2026 | $2.01 |
| Oct 5, 2026 | $2.06 |
| Oct 4, 2026 | $2.16 |
| Oct 3, 2026 | $2.25 |
| Oct 2, 2026 | $2.23 |
| Oct 1, 2026 | $2.27 |
| Sep 30, 2026 | $2.14 |
| Sep 29, 2026 | $1.98 |
| Sep 28, 2026 | $1.94 |
A row is recorded only on nights the price moved, so each price held until the row above it.
Every version of Big Mother Mouser
2 printings, newest first. Prices are the market figures Scryfall publishes, refreshed nightly. A printing with no figure shows a dash rather than a zero, because Scryfall publishes none for some of them. Click a card's art to chart that version's price above.
Teenage Mutant Ninja Turtles Eternal
- Normal
- $1.13
- Foil
- —
Inverted
Teenage Mutant Ninja Turtles Eternal
- Foil
- $41.21
Prices from Scryfall, which tracks the TCGplayer and Cardmarket markets. They move daily and are a guide rather than a quote. Search TCGplayer for Big Mother Mouser. It runs a name search across every version, which covers the printings TCGplayer publishes no direct link to.
Aggregated from Commander games tracked in TurnZero HQ. Every figure counts decks and games only. No individual deck list, player or playgroup is identified. Win rates are withheld below 5 completed games, where the sample is too small to mean anything.
