You could do that with Bria, sure, but you run into the problem of not having a token maker in the command zone while deemphasizing card draw
Delver sees the most play of the lot as it is most comfortable in the less tempo focused decks
The Dead Marshes Urborg, Tomb of Yawgmoth ($53.00) A place of rot and decay makes the perfect representation of everything turning black
The deck starts by casting powerful creatures with abilities that trigger when you cast spells including Alania (copies spells), Valley Floodcaller (flash, anthem effect), Stormcatch Mentor (haste, prowess, reduces spell cost), Harnesser of Storms (draw), and Coruscation Mage (offspring, direct damage)
(8/23/2016) Players can't do anything between voting and finishing the resolution of the spell or ability that included the vote