I don't mean to sound like a jerk...

but nice list of cards? lol. what are your replacement suggestions or reasons for these? do you believe my removal is too light? do you believe a stall game over a ramp game is more important? i mean there's an endless list of cards to choose from, but a list of what of my list you'd replace with yours would sure be helpful versus just posting things. Thanks for looking.

Sneak Attack +Volrath's Stronghold = never need another dragon!

Also, I really like the idea of using Scion of the Ur-Dragon as the commander and abusing Wheel of Sun and Moon

Volrath's Stronghold is an interesting suggestion! I hate having any land that only produces colorless but my fixing is pretty decent between the shock and fetch lands. I may tinker with that a bit. I stayed away from Scion as a commander due to a friend already having "dibs" more or less in the playgroup with that deck, plus really just wanted to build around the new Ur-Dragon! Thank you for taking a look and your suggestions.