Grub's Command is a rare Kindred Sorcery — Goblin card from Lorwyn Eclipsed (ECL), collector number 340. Current market price: $0.54 (foil $0.72), TCGplayer market prices via Scryfall.
Choose two — • Create a token that's a copy of target Goblin you control. • Creatures target player controls get +1/+1 and gain haste until end of turn. • Destroy target artifact or creature. • Target player mills five cards, then puts each Goblin card milled this way into their hand.