utterly brutal fucking card in artifact or artifact affinity decks 
Discussion
I'm also a big fan of board wiping cards.
Damn immediately putting the new artifact into play is killer! I have moon blessed cleric in an enchantment deck but it goes to the top of the library which is pretty rough
I still have this deck built, but it's an entirely artifact deck, including lands, and it all runs around Micosynth Golem, which gives every artifact affinity to artifact. So basically you just play until you get a Tinker, sack something, bring out Micosynth Golem, and play pretty much every card for free.
It has the possibility for a third turn win, assuming your opponent has nothing that kills artifacts.