@GabeCubed - I took out two Frostburn Weird as it is pretty useless to have more than one. I added in 2x Quicken. Not sure about them yet. Just testing.

In the sideboard, you should try Rending Volley instead of Combust

I run Combust for Siege Rhino because that bugger is hard to kill.

Delver of Secrets  ^Flip is much better than Spellheart Chimera. Frostburn Weird just seems pretty useless in general, and really isn't worth running in Modern for most decks. The best creatures for blue and red are Delver of Secrets  ^Flip, Snapcaster Mage, and Young Pyromancer. These guys will give you card/board advantage and put your opponent on a clock for very little mana investment. That means you can keep mana open to cast your instant spells and counter their game plan. Clout of the Dominus isn't really necessary at all in a deck with as few creatures as this. It'll be a dead draw quite often. I'd up Remand to 4 and if you can afford them run a few Cryptic Command, though no one will blame you if you can't. Here's my U/R deck: Mmmm... Blue Moon

I appreciate your comment but you're basically telling me to take the uniqueness out of my deck and make it a standard U/R delver list. And I just can't do that. I have enjoyed this list thoroughly. I have been thinking about Cryptic Command and when I can afford one I will definitely include it in the list.

The reason you run Combust is to bring it in against Splintertwin.The Rhino only costs 2 mana to kill either way, and Abzan doesn't run counterspells. Splinter twin, on the other hand, does and you also end up with one more mana. With Spell Snare in your deck that might mean that your last bolt resolves.

Also, you should try Monastery Swiftspears. In such a spell heavy deck, I assure you they'll do good.

If I use two mana to kill rhino I have to use two spells making it 2 for 1 and not 1 for 1 although my creatures may be big enough for rhino now that I think of it.

I'd suggest cutting Keranos, God of Storms for Izzet Charms. And maybe some Think Twices to cast at the end of their turn.

Think Twice is good but it's still a lot of investment and lowers the power of Spellheart Chimera. If I was running Young Pyromancer I would run think twice for sure. Keranos is very powerful so I'd like to keep it if I can.