Shadow Stinger is a uncommon Creature — Vampire Rogue card from Zendikar Rising (ZNR), collector number 123. Current market price: $0.16 (foil $0.20), TCGplayer market prices via Scryfall.
Tap another untapped Rogue you control: This creature gains deathtouch until end of turn. Whenever this creature deals combat damage to a player, that player mills three cards. (They put the top three cards of their library into their graveyard.)