The rules:

1. Only blue, black, green, and colorless. No red or white.
2. The intended power level is low Modern or high Pioneer.
3. No designed-for-Commander. Cards must have been designed for 1 vs. 1 Magic.

Design philosophies:

1. Sultai is the color triad that best contains the Magic I like to play. I want to include as many iconic cards in those colors as I can without running afoul of my intended power level.
2. I am using an emergent philosophy. I won't engineer archetypes, but I will refine the card selection so there are no traps. If you see it in your first pack you should be able to build around it.