This is probably not where a budget list wants to be, I think this way its better build and still extremely budget friendly:
4 Delver
4 DRC
3 Murktide
2 Shredder
1 Borrower
4 Brain
4
Ponder4 ExIt
2 Bauble
4
Daze4 FoW
4 Bolt
1 Heat
4 Waste
4 Tarn
4 Blue Fetch
1 Red Fetch
1 Volcanic
3
Island1
Mountain1 F Islet
-> You really need at least 1 Volcanic to be competitve to have early access for UU with R, 1 Volcanic shouldnt be to hard to get honestly. Also
Predict is not needed, just stick to normal Delver with Baubles, DRC and instead of the 4th Murktide you can easily substitute it with 2 more Shredder to be more sensitive to your manabase. Rest is rather standard.