Dog Walker is a common Creature — Human Citizen card from Murders at Karlov Manor (MKM), collector number 197. Current market price: $0.12 (foil $0.25), TCGplayer market prices via Scryfall.
Vigilance Disguise {R/W}{R/W} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, create two tapped 1/1 white Dog creature tokens.