Mornsong Aria is a rare Legendary Enchantment card from Lorwyn Eclipsed (ECL), collector number 111. Current market price: $0.30 (foil $0.35), TCGplayer market prices via Scryfall.
Players can't draw cards or gain life. At the beginning of each player's draw step, that player loses 3 life, searches their library for a card, puts it into their hand, then shuffles.