Graywater's Fixer is a rare Creature — Lizard Mercenary card from Outlaws of Thunder Junction Commander (OTC), collector number 36. Current market price: $0.35, TCGplayer market prices via Scryfall.
Each outlaw creature card in your graveyard has encore {X}, where X is its mana value. (Exile it and pay its encore cost: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)