How about Caged Sun and Gauntlet of Power to help with ramp. It can get you up to 8 mana per swamp.

And Lifeline is a great card with your commander. It normally works for everyone, but with him out, it only works for you. It also combos with Fleshbag Marauder and Merciless Executioner to keep your opponents board clear of creatures.

Btherricks, thanks for the suggestions. I'm actually running Gauntlet of Power currently, and it does indeed do some work. Caged Sun was a card in my original pile of cards, but it ultimately didn't make the team as I felt I needed one more piece of removal at instant speed.

I believe that I sat here laughing for about five minutes straight after reading Lifeline. I presently don't have one (and hadn't heard of it until now as I sadly wasn't playing during the block it was released in), but that is going onto the acquire list for sure. Amazing card for this list.