Byway Barterer is a rare Creature — Raccoon Rogue card from Bloomburrow (BLB), collector number 129. Current market price: $0.25 (foil $0.35), TCGplayer market prices via Scryfall.
Menace Whenever you expend 4, you may discard your hand. If you do, draw two cards. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)