Sling-Gang Lieutenant is a uncommon Creature — Goblin card from Modern Horizons (MH1), collector number 108. Current market price: $0.32 (foil $1.66), 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.