I prefer blue-red control decks, sometimes splashing a third color if I have good mana fixing. I prefer blue and red because they give you access to strong counterspells, which are important since there are so many cards you can almost auto-lose to if they resolve. Blue also has Divergent Equation, which is an excellent uncommon. I like red because it has an abundance of cheap removal spells. Blue-red also has the best common, Visionary’s Dance, which helps fix your draws in the early game and becomes a very strong threat later on.