MTG Salvation

Hey guys, I've recently started working on a cube with the stipulation that all of the cards must be under five dollars. (with the exception of a couple lands and cards a couple cents over). I'm trying to make the list as powerful as possible (within reason, no Sol Ring), while also supporting archetypical decks. I have noticed that designing blue is going to be a challenge because of the restrictive card of a lot of those cards. Any advice on what I could do for the list? Thanks in advance! Current list here: http://www.cubetutor.com/viewcube/66319

I would leave the Treacheries and Jaces out of it and focus on some sort of devotion package in blue. The cards are cheap for the most part and still good. You could even do a Merfolk theme that might be pretty fun.

Here are some good budget blue options that I didn't see on your list:

• Hedron Crab
  
• Gush
  
• Invisible Stalker
  
• Callous Oppressor
  
• Dominating Licid
  
• Eldrazi Skyspawner
  
• Trinket Mage
  
• Treasure Mage
  
• Wake Thrasher
  
• Talrand's Invocation
  
• Thieving Magpie
  
• Mulldrifter
  
• Sphinx of Jwar Isle
  
• Brainstorm
  
• Deep Analysis
  
• Spelltwine
  
• Jilt
  
• Waterfront Bouncer
  
• Arcanis the Omnipotent
  
• Rite of Replication
  
• Wharf Infiltrator

I would always put more emphasis on potential synergy than power. Check out other people's Peasant cubes. Most of those cards are pretty close to being good enough for classic cubes. There are usually more options than it seems.

If you haven't already, you should definitely check out the list of cube staples that cost $2 of less http://www.mtgsalvation.com/forums/the-game/the-cube-forum/cube-card-and-archetype/603665-budget-cube-cards-that-cost-less-than-2-usd

Here are just a few great blue cards that cost next to nothing that you're not running:

• Arcane Denial
  
• Force Spike
  
• Forbid
  
• Enclave Cryptologist
  
• Treasure Cruise
  
• Serendib Efreet
  
• Whirler Rogue
  
• Tinker
  
• Impulse
  
• Forbid
  
• Aether Adept
  
• Aracane Savant
  
• Upheaval
  
• Muldrifter
  
• Deep Analysis
  
• Imprisoned in the Moon
  
• Psionic Blast

Some budget subsititions that might work for you that don't see play in traditional cubes:

• Exclude
  
• Repulse
  
• Sphinx of Jwar Isle
  
• Future Sight
  
• Standstill

If you're looking for another blue planeswalker, I'd also expect Jace, Unraveller of Secrets to go below $5 before too long if you can't find a copy that cheap yet.