You're right, It could be fools errand. But why not give itna try, it could lead down some relatively un-explored rabbit holes of design opportunity? There are many ways to interpret and mis-interpret colors, classes, etc, but in an open idea forum I feel it's important to be less dismissive and more open, less black and more green In the intereests of thi and for fun ill take another stab at iterpreting CH in terms of mtg colors. Warriors. Iirc, red/white or "boros" is the military guild, a mixture of aggression and structure. In terms of what warriors do and have, I feel this is the closest two-colour fit. They like to charge in early with strong direct damage (red), and also have strong armor and blocks, not to mention structure via early positioning (white). You could also argue that warriors are g/w, but to me the flavor of red charging and getting in your face has to be represented on warriors. Wizards- blue/red or Izzet. Red on wizards? Yes, Sure, why not? Red doesn't have to always be hasty and in your face, but it does represent the direct damage of wizards perfectly (nt to mention wizards have burn spells), while blue to me represents the slow controlling aspect, either via control spells, various terrains, or simply moving away from melee range. Priest, yes, absolutely you're right they have several black aspects. And of course with their healing and various buffs they have several white aspects. Black + white = Orzhov! Which is of course not only represented by a church in mtg, but has a major theme of draining (opponent loses life, you gain life), which is represented nicely with the many vampire attacks a priest has access too. So it seems that since white and red are both well covered with these three that to me loosely leaves: Dimir (black/blue) Golgari (black / green) Simic? (Blue/green) ...to cover the gaps. Golgari especially, could be a perfect class to put poison into, a slow yet strong manipulative guild and therefore class perhaps? Maybe a Dark Ranger? Corrupted Druid? Troll regeneration would be also nice for Golgari type class. Although of course we might also need the Troll race For Dimir i could think of no better class than rogues! Mysterious, silent assassins who attack from the shadows. They would also have access to invisibility, how cool an Emerald card this would be Again, could have a venom dagger attak. Simic - summonr as previously mentioned. Summons spiders andzombes with er, nasty poison bite. Did I mention some poison items in the next expansion would be nice?? Anyway, these are justsurface ideas, for more detailed ones I charge by the hour) Edit: in the long long-term I really feel having 5 classe and/or race will be great fit for the longevity, variety, and depth of the game.