Your search for "arcbound mouser 3" revealed the following:
Arcbound Mouser - MH2 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Campbell White Card Text:LifelinkModular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may...
Arcbound Mouser (MH2) from Modern Horizons 2, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Campbell White Card Text:LifelinkModular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its...
Arcbound Mouser (Foil) (MH2) from Modern Horizons 2, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Campbell White Card Text:LifelinkModular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put...