Fugitive Codebreaker is a rare Creature — Goblin Rogue card from Murders at Karlov Manor (MKM), collector number 348. Current market price: $0.19 (foil $0.16), TCGplayer market prices via Scryfall.
Prowess, haste Disguise {5}{R}. This cost is reduced by {1} for each instant and sorcery card in your graveyard. (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, discard your hand, then draw three cards.