With access to stax elements and "silver bullets," the deck can control tempo, disrupt opponents, and dictate the flow of the game
The secret is its Eminence ability, which reduces the cost of your other Dragon spells by one mana, even while The Ur-Dragon is in the command zone
Note thats any color you want, btw
Job select cards are especially valuable in WU because you can fill out your mana curve with equipment artifacts
Why not just Solitude/Ephemerate and get a five-mana creature for one-mana, and take two of your opponents creatures along with it
Your opponents will be playing a Goblin Guide, Slippery Bogle, Ornithopter, Glistener Elf, or Noble Hierarch on turn 1, and if thats the case, our deck has to be nothing but slaughter early on with a planeswalker finish