Rate/Fix my Yugioh deck please?

It isn't a bad deck and I would rate it a 7/10. The thing is Book of Moon is useful and no longer limited. As for a replacement though if you really want one would probably be 1 of these 3: Machine King Prototype, Machine King, or Perfect Machine King (In my opinion your best option. He is for sale online for like 3.99 near mint for the Ultra rare to 6.99 near mint for the Ultimate rare) I don't know if you can get any of them but I do highly suggest them. You could also use Barrel Dragon or Blowback Dragon but those will definitely be harder to obtain.