Recouvreuse de l'aube

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Rulings:

• 11/4/2015 If any opponent has a creature card in their graveyard as Dawnbreak Reclaimer’s ability resolves, then you must choose one of those cards. You can’t choose a different opponent with no creature cards in their graveyard to avoid returning one of those cards.
• 11/4/2015 If there are no creature cards in any opponent’s graveyard as Dawnbreak Reclaimer’s ability resolves, you’ll still have the option to return a creature card from your graveyard to the battlefield. You choose which opponent will choose a creature card in your graveyard.