Flowerfoot Swordmaster is a rare Creature — Mouse Soldier card from Secret Lair Promo (SLP), collector number 46. Current market price: $0.45 (foil $1.48), TCGplayer market prices via Scryfall.
Offspring {2} (You may pay an additional {2} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Valiant — Whenever this creature becomes the target of a spell or ability you control for the first time each turn, Mice you control get +1/+0 until end of turn.