Grief is a mythic Creature — Elemental Incarnation card from Special Guests (SPG), collector number 46. Current market price: $3.94 (foil $7.03), TCGplayer market prices via Scryfall.
Menace When this creature enters, target opponent reveals their hand. You choose a nonland card from it. That player discards that card. Evoke—Exile a black card from your hand.