Leira, Lady of Mists

Leira enters the battlefield as a copy of target creature, except it is a faerie god in addition to
its other types, and has the following abilities.
Sacrifice a faerie: Return this creature to its
owners hand.
You may return Leira from your graveyard to
your hand by exiling the top of your library until
you have exiled cards with mana value 8 or more.