Im not exactly sure about sideboarding against them, or what cards would help
As it is a Rank 11 monster, it will gain at least 2200 DEF via its own effect
As long as they have an apparent purpose, the beginners will treat them as a bonus
The mousefolk in particular are known for their pluck and bravery, and when the call to adventure comes, they tend to answer
It also gives 5% cash back on hotels, vacation rentals and rental cars booked through Capital One Travel, 3% cash back at grocery stores (excluding superstores like Walmart and Target), on dining, entertainment and popular streaming services, along with 1% back on all other purchases (except for 8% back on Capital One Entertainment purchases)