Choose your colors and archetype based on a combination of three factors: what you want to draft, what cards you've already drafted, and what you think might be open
Those creatures dont untap during that players next untap step
Next is blue the color of knowledge and ambition
For that, you need to pay 2 colorless mana
Ultimately, even when you exclude the potential buff ability, Finale of Devastation is definitely worth a spot on this list
As for Ral Zarek, himself, I kind of imagine him seeing moderate success as a random one- or two-of in some U/R/x control decks, but more interestingly, I imagine someone building a new kind of blue aggro or midrange deck that actually takes advantage of Ral Zareks ability to remove blockers or do six to the face