If you choose to use Moonring Mirror’s second ability, you return all the cards you own exiled by both of its abilities, but not any of the cards you just exiled from your hand.
Whenever you draw a card, exile the top card of your library face down.
At the beginning of your upkeep, you may exile all cards from your hand face down. If you do, put all other cards you own exiled with this artifact into your hand.
Note that Moonring Mirror’s first ability is not a replacement effect.
