BLUE
Again, lower mana curve, more interaction, and support to some archetypes (notably UB discard and UG storm/combo/ramp).
Credits go again to Caleb's blog for selling me on Fatestitcher.
Well deserved retirement note: cryptic command and Jace, who were both in the cube since its inception 10+ years ago! They served us well, but both are now too generically strong and fits in basically every U deck that can pay their costs. This is not where I want to take the cube.