Here is a very general overview: White (Plains): Focuses on order, protection, justice (like exiling opposing creatures) Blue (Island): Specializes in control, card draw, and manipulating the game (like countering spells)
Then she has a combat damage trigger to a foe which can happen twice with her double strike
Over the course of our match I taught him everything I knew as best I could, and before the end, he beat me
"/" [Interview with development staff / Making the Game]
The effect of the instant is kind of a boring buff, with the only interesting thing involved being the involvement of dice, which this set really seems to like
White, as the color of order and structure, tries to contain chaos at every turnbut chaos will not be contained