Robber of the Rich is a mythic Creature — Human Archer Rogue card from Throne of Eldraine Promos (PELD), collector number 138p. Current market price: $1.64 (foil $2.33), TCGplayer market prices via Scryfall.
Reach, haste Whenever this creature attacks, if defending player has more cards in hand than you, exile the top card of their library. During any turn you attacked with a Rogue, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.