The rulebook describes that SEAL X CARDS needs to ‘place them in the Sealed pile’. If there is already any card in the Sealed pile, should I place on those cards or beneath them?
Since the UNSEAL effect not always take cards from the top of Sealed pile, the cards' order in Sealed pile would make things different. It would be better if clarify this point in the FAQ or new Rulebook.
On top, exactly like you would place in a discard pile.