Livia, Architect of Marvels

When Livia, Architect of Marvels enters the battlefield, reveal the top 7 cards of your library. Put all noncreature artifacts from among them into your hand, and all artifact creatures onto the battlefield. Put the rest on the bottom of your library in any order.
{x},{t}: Search your library for an artifact card with converted mana cost {x} and put it on top of your library.