Your search for "*mouse guard*" revealed the following:
Jade Guardian
[Ixalan]
Add 1x NM ($0.30) to Cart
$0.30
Flesh Burrower
[Duskmourn: House of Horror]
Add 1x NM ($0.30) to Cart
$0.30
Winter, Misanthropic Guide
[Duskmourn: House of Horror]
Add 1x NM ($0.50) to Cart
$0.50
Elite Vanguard
[Magic 2010]
Add 1x NM ($0.35) to Cart
$0.35
Labyrinth Guardian
[Amonkhet]
Add 1x NM ($0.35) to Cart
Add 1x LP Foil ($0.40) to Cart
Grove of the Guardian
[Return to Ravnica]
Add 1x LP ($0.45) to Cart
$0.45
Memory Guardian
[Aetherdrift]
Add 1x NM Foil ($0.60) to Cart
$0.60
Guardian of Solitude
[Champions of Kamigawa]
Add 1x NM ($0.35) to Cart
Add 1x LP ($0.32) to Cart
Thalia, Guardian of Thraben
[Innistrad: Crimson Vow]
Add 1x NM ($0.60) to Cart
$0.60
Zimone, All-Questioning
[Duskmourn: House of Horror]
Add 1x NM ($0.50) to Cart
$0.50
Omnivorous Flytrap
[Duskmourn: House of Horror]
Add 1x NM ($0.50) to Cart
$0.50
Munda's Vanguard
[Oath of the Gatewatch]
Add 1x NM ($0.50) to Cart
$0.50
Ageless Guardian
[Strixhaven: School of Mages]
Add 1x NM ($0.25) to Cart
Add 1x NM Foil ($0.25) to Cart
Trollbred Guardian
[Ravnica Allegiance]
Add 1x NM ($0.35) to Cart
$0.35
Fear of Immobility
[Duskmourn: House of Horror]
Add 1x NM ($0.25) to Cart
Add 1x NM Foil ($0.30) to Cart
Miasma Demon
[Duskmourn: House of Horror]
Add 1x NM ($0.35) to Cart
$0.35
