原文Ashiok's second ability doesn't target any creature card. You choose which creature card to return when that ability resolves, but you must choose one with mana value equal to the value you chose for X when activating the ability.
原文If Ashiok leaves the battlefield, and later another Ashiok enters the battlefield, it is a new object (even if the two were represented by the same card). Creature cards exiled by the original Ashiok can't be put onto the battlefield by the second ability of the new Ashiok.