Wreck of the Falhalon

When Wreck of the Falhalon enters the battlefield, search your library for a creature card and put it into your graveyard.
{x}, {t}, Exile target creature card with power X from your graveyard: Create X 1/1 colorless
Ghost creature tokens. Sacrifice Wreck
of the Falhalon.
Recovery proved impossible as the vessel was already claimed.