pretty good, but i suggest adding a couple procrastinations.
or something
No. Too expensive and more cards to draw through.
The Silence seems like a bit of wildcard - I would guess any card works in that 30th slot, so you could easily swap it with any cheap non-:entropy card.
Like Majofa mentioned, I would suggest swapping the Precognition with Sundials - the Supernovas will provide the

needed to draw and Sundials also stop damage so you have a better chance of surviving and drawing out your deck.