Colorless mana production

[Noblellama]

60 card causal deck

HAVE
4 {Urza's Mine}
4 {Urza's Powerplant}
4 {Urza's Tower}
4 {Cloudpost}
4 {Glimmerpost}

NEED
4 of one more land that produces generic and it would be cool if it had a synergistic effect...

[Mattao19]

Vesuva is you best bet

[Rasser]

 {Zoetic Cavern}

[Mattao19]

 {Mishra's Workshop}? Lol if you have some dough or are proxying

[Kaalia with haste]

Vesuva seems really good. Copy an urza's land or a cloudpost

[blackychan1]

{Mishra's Workshop}? Lol if you have some dough or are proxying

SOME dough? A playset of these is a LOT of dough!

[Kaylesh]

Wow. That's a beauty.
On lands there's also {Scorched Ruins}, but I would recommend that with a {Crucible of Worlds}.

[adventus]

Casual deck

{Thespian's Stage}