Grief is a mythic Creature — Elemental Incarnation card from Modern Horizons 2 (MH2), collector number 311. Current market price: $4.46 (foil $7.60), 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.