Gríma Wormtongue is a rare Legendary Creature — Human Advisor card from Secret Lair Drop (SLD), collector number 734. Current market price: $7.51 (foil $8.90), TCGplayer market prices via Scryfall.
Your opponents can't gain life. {T}, Sacrifice another creature: Target player loses 1 life. If the sacrificed creature was legendary, amass Orcs 2.