Affa Guard Hound is a uncommon Creature — Dog card from Duel Decks: Zendikar vs. Eldrazi (DDP), collector number 2. Current market price: $0.07, TCGplayer market prices via Scryfall.
Flash (You may cast this spell any time you could cast an instant.) When this creature enters, target creature gets +0/+3 until end of turn.