Vedalken Refiner

When Vedalken Refiner enters the battlefield, you may sacrifice an artifact. If you
do, search your library for an artifact card, then shuffle your library and put that card on top of
it.
Some Vedalken of Esper go above and beyond the expectations of their superiors, changing and upgrading their etherium creations to be almost on par with the creations of the Sphinxes.