Worldheart Phoenix is a rare Creature — Phoenix card from Conflux (CON), collector number 77. Current market price: $0.12 (foil $0.86), TCGplayer market prices via Scryfall.
Flying You may cast this card from your graveyard by paying {W}{U}{B}{R}{G} rather than paying its mana cost. If you do, it enters with two +1/+1 counters on it.