Yeahhh, I'm gonna go with Slyvester here. There isn't a single 5 color deck that doesn't run
Command Tower. Also, contrary to popular belief, 1
Prismatic Vista won't thin your deck enough to be worth it over an unconditionally untapped 5 color land. It takes lots of fetches to thin your deck to the point it's actually noticable. Also, as you are running fetches + shocks, checklands are fantastic here. They should definitely be added in, and they don't kill your wallet. I also think painlands should definitely deserve an inclusion, but that can be disputed a little bit, unlike
Command Tower and the shocks. If a player looking to use your mana base can afford the
Scalding Tarn, then they likely will be able afford
Mana Confluence &
City of Brass, two more lands that more than deserve inclusions in 5 color decks. Honestly, just running 10 shocks, 10 fetches, 10 checks,
Command Tower,
Mana Confluence,
City of Brass, and 1 of each basic is probably all you need mana base-wise (at least at this budget level).
Tell me what you think!