Cloned from Ravnica Peasant Cube

It may have been better to start from scratch.

This cube is balanced in terms of all colors (including guild) mana-type, and watermark. The idea was that the watermark would be an easy way to get synergies to start working. Creature/non-creature balance is different for each guild, trying to follow the W>G>B>R>U standard, with the notable exception of Simic. Drafting will likely be a little tight, but I did make reasonable effort to have an ideal mana curve in the cube itself.

Future work will be refining the mana curve and making sure all the of the 10 guilds' synergies are equal. The latter will probably require play-testing more than anything else.