Jubilation is a rare Creature — Elemental Incarnation card from Lorwyn Eclipsed Commander (ECC), collector number 17. Current market price: $0.22, TCGplayer market prices via Scryfall.
When this creature enters, creatures you control get +2/+2 and gain trample until end of turn. Encore {7}{G}{G} ({7}{G}{G}, 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.)