Inika, Eternal Archivist

Whenever Inika, Eternal Archivist enters the battlefield or attacks, you may pay {x}. If you do, cache the top X cards of your library. (To cache a card, exile it face down. You may look at it at any time. You may draw from your cache instead of your library.)
{w}{u}, {t}: Search your cache for a card and put that card on top of it.
"Ayli, Ayumi, Azami... Here! Azor!"