The Engineer, TARDIS Designer

Chronal Engineer - When The Engineer, TARDIS Designer enters, look at the top 6 cards of your library. You may reveal an artifact card from among them; if you do, put it into your hand. Put the rest on the top or bottom of your library in any order.

Leftover Parts - {t}: Add {c}{c} to your mana pool. The next time you cast an artifact spell this turn, create a Junk token; if it is an Equipment or Vehicle, create 2 Junk tokens instead.

"Best thing I've made yet."