How mana symbols of each colour?
Using my trusty Magic Online “Stats” button I can see that there are 17 black mana symbols, 14 green mana symbols and still 1 white mana symbol. This answer isn’t much different from the first question, meaning that there aren’t any unduly onerous requirements for any particular colour. If we had found 14 black mana and 20 green then it would mean we’re working with a lot of double-green spells and would have to adjust accordingly. Hiroshi Hyde went a step farther in an email and listed out all the mana requirements of the different abilities so you don’t end up with only one Swamp when you need to play black spells and activate the Groodian or the Rotwurm. This can get a bit tricky as while you want to include the activation costs of the Groodian and the Rotwurm, it’s not likely that you’ll be transmuting the House Guard or the Brainspoils often enough to worry about having extra Swamps. With the addition of reasonably likely activated ability costs, you’re looking at 19 black mana, 1
