Latchkey Faerie is a common Creature — Faerie Rogue card from Modern Masters (MMA), collector number 50. Current market price: $0.22 (foil $0.45), TCGplayer market prices via Scryfall.
Flying Prowl {2}{U} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Faerie or Rogue.) When this creature enters, if its prowl cost was paid, draw a card.