Big Mother Mouser 
Artifact Creature — Robot0/0
Oracle text (EN)
Artifact Creature — Robot
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.
Printing details
- Set
- TMC · 37
- Rarity
- Rare
- Language
- EN
- Artist
- Miklós Ligeti
- Released
- 2026-03-06
- Prices
- €0.69 · $1.14
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 30, 2026 | €0.66 | €0.34 |
| October 29, 2026 | €0.69 | €0.34 |
| October 28, 2026 | €0.70 | €0.34 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €0.29 trend €0.66 30-day avg €0.70 | low – trend €2.00 30-day avg €1.86 |
| CardTrader (EN) | NM from €0.34 with Zero from €0.38 | NM from – |
| CardTrader (any language) | NM from €0.34 | NM from – |
Cardmarket updated Oct 30, 2026 · CardTrader updated Oct 30, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Not legal
- modern Not legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Not legal
- competitivebrawl Not legal
- duel Legal
- future Not legal
- gladiator Legal
- historic Not legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Not legal
- tlr Not legal
Rulings
-
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.