I'm a huge fan of "engine" style decks and basking rootwalla so I was immediately intrigued by this deck. I've played a few leagues and it has been really powerful. (cashed every league, one 5-0, one that was 4-1 where my "loss" was a split with someone else) Blue matchups are definitely favorable and hating on shops, dredge, and PO out of the board is a solid plan.
I really like the Bob plan for this deck as it's easy to spew cards and he can fuel some value bazaar activations. Spirit guide has also been clutch as a dude to pitch, a target to grab when you need another discard for hollow one (mana neutral, 1 extra creature in hand is discarded), or just to fuel a powerful turn 1. I also put a thalia in the maindeck to possibly power out on turn 1 or at a bullet to search for and i've been pleased with her.
I'm wondering how important faithless looting is for the deck. It's definitely the weakest enabler and it was my cut to slot in Thalia, but it's probably still necessary in some number for the deck to function.