However, my Mox Opals are already spoken for in Affinity (And I'm definitely not buying 4 more), and Walking Ballista is a bit pricey as well. What else can this deck do with infinite mana of any color? I'm thinking the goal is to draw as many cards as necessary to get to Banefire, which the deck only needs a single copy of. The rest of the deck should be card draw (and a lot of it, I'm actually wondering if this might be the Modern deck that can use Enter the Infinite, although it might just be better to use Pull from Tomorrow and Mind Spring, or use all of them), and counter magic.
I suggest you have a look at my list. I don't know, if it's budget enough for you. But this list plays very well in my experience.
I'm currently on a 50% win rate, in a competitive modern environment. My only concern is my sideboard, which isn't perfect yet.
I really like the mana curve of this list. Combined with the consistency the combo goes off.
The protection cards also really pay off. Especially Lightning Greaves on a Pili-Pala is extremely powerfull to get around summoning sickness.