Rotwidow Pack is a uncommon Creature — Spider card from Modern Horizons (MH1), collector number 212. Current market price: $0.32 (foil $7.67), TCGplayer market prices via Scryfall.
Reach {3}{B}{G}, Exile a creature card from your graveyard: Create a 1/2 green Spider creature token with reach, then each opponent loses 1 life for each Spider you control.