Well, ever since a friend of mine decided to help me get into every FNM and prerelease, I've had the tools to use my studying of all the formats. He invited me to the GP, and I just couldn't say no.
Pretty much since then, I've been taking my game a bit more seriously...though I still have a lot to learn.
On a related note, you did have a problem with the dual lands, so I fixed them, too:
(This) enters the battlefield with a charge counter on it.
T: Add (dominant color of the guild) to your mana pool.
T, Remove a charge counter from (This): Add (other color of the guild) to your mana pool.
I think I have a decent replacement for landmining:
Manafixing X (X: Add X mana in any combination of this permanent's colors to your mana pool. Activate this ability only once per turn, and at any time you could cast a sorcery.)
Something along those lines. I know it's worded improperly, but meh.