Lamentation is a rare Creature — Elemental Incarnation card from Lorwyn Eclipsed Commander (ECC), collector number 10. Current market price: $0.21, TCGplayer market prices via Scryfall.
When this creature enters, destroy target creature an opponent controls. You gain 3 life. Encore {6}{B}{B} ({6}{B}{B}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)