Sling-Gang Lieutenant is a uncommon Creature — Goblin card from Modern Horizons 2 Timeshifts (H2R), collector number 8. Current market price: $0.42 (foil $0.40), TCGplayer market prices via Scryfall.
When this creature enters, create two 1/1 red Goblin creature tokens. Sacrifice a Goblin: Target player loses 1 life and you gain 1 life.