For more information on double-faced cards, checklist cards, delirium, madness, and skulk, please see the Shadows over Innistrad Release Notes
Since the Uro ban, Ive seen more Dredge decks popping up and trying to dump a ton of power on the board before their opponents can set up defenses or enact their own game plan
Then you get Disorient, which demands 3U just to eliminate 7 power from one creature
The color in general hits all the flavor notes that you want it to while offering up plenty of playable choices
I also included a lot of cards that can flicker creatures on their own, that way you can still be doing what you want if you cant have Brago on the field for whatever reason
The risk reward balance for this list very much pushes you towards being greedy on the mana base and I didn't really take that into account in my first build