Tolaria West, Muddle the Mixture, and Dimir House Guard tend to be some of the more common transmute cards
Second, now that you're not in a dungeon, you're free to start a new one
This works because the sliver player reads it more like creatures you control have flying and haste, for which would be one of the best Boros cards ever
Oji, the Exquisite Blade Oji, the Exquisite Blade is an exciting commander because it can trigger on each player's turn if you can hold on to a steady stream of spells
(actually asking) beyond that i guess some of the better stuff to ramp into is #8 it even makes those awful turn 7 mana dorks into reasonable threats
Thats true of most of the cycle, but this one doesnt affect the game state at all, and the set has little else to support a mill engine