Servant of the Stinger is a uncommon Creature — Human Warlock card from Outlaws of Thunder Junction (OTJ), collector number 105. Current market price: $0.19 (foil $0.27), TCGplayer market prices via Scryfall.
Deathtouch Whenever this creature deals combat damage to a player, if you've committed a crime this turn, you may sacrifice this creature. If you do, search your library for a card, put it into your hand, then shuffle. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)