Playing all four copies of Gadget Hackwrench, Brilliant Boson is also essential to pulling off this deck's core strategy: flooding the board with discounted Inventors and buffing them with Resist and extra Willpower
Anyway, hopefully that helps
(When this equipment enters create a colorless 1/1 Hero creature token and attach this to it.) Equipped creature gets +1/+0 and is a Knight in addition to it's other types
Since plenty of cards in this deck have flashback, you may still be able to access several of the cards from your hand even when they're in the graveyard, and you'll be able to draw into some genuinely new possibilities
I, personally, find this theory less convincing and accurate than the first mentioned, but both lead to the same ordering
A rare MTG card is not always an expensive MTG card