@AzureShade:
I haven't added any of your support cards (yet), unless there are specifics that you really want in. Currently, each color has 4 Legendaries at Rare, so supporting only a few of them might not be great.
I also get your points on Maralen. Currently both she and Phage are on the list, but I'd be happy to cut them if other suggestions pop up, or if we cull some legendaries.
@Pavor:
I've added a couple of the artifacts you suggested, but with the dual lands at uncommon, there isn't a ton of room for them. What we could do is to just have allied dual lands, which frees up spaces for either multicolor cards or artifacts at uncommon.
I don't think there's room for a Curse subtheme. Blue-White seems to be going in the direction of an Enchantment/Pillowfort theme, but they don't have awesome curses. Maybe a couple of Black curses might get in, though.
There are currently 25 legends in the cube. Not all of them might stay in the final version, but that seems to be a good ballpark estimate of how much legendaries we can feasibly support. Much more and we'll have too many creature in the higher rarities.
@UselessCommon:
Phage is currently still in, but I don't think it's safe to let her in without acknowledging that she is a card that every color/archetype must be able to deal with. I'm not as much worried about building around her, but rather against building against her. Unlike other strong rares, she's not just a "must-kill" threat. You need to deal with her in one turn, or you've lost.
I agree that the enchantment cycle is fairly flavorful, but I'm hesitant to commit uncommon slots that might not support the archetypes in their colors. I also don't think the entire cycle is a hit, so I certainly don't want to automatically include all of them.
Could you at least link to the relevant video?
I've added Bone to Ash, Llanowar Elves and Mogg Flunkies. I sorta wanted
Reckless Cohort in the slot where Mogg Flunkies would have went, but that card isn't worth putting more allies in for, probably.
I've also added the Phyrexian mana creatures, but I'm not a huge fun for balance reasons, as they're effectively colorless.
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Currently, the archetypes seem to be:
UW: Pillowfort Enchantments
BW: Something about balancing life-loss and lifegain
UR: Artifacts
BR: Seems to want to go in the direction of something discard-based but isn't getting there.
Green (probably with Red) seems to want to go ramp.
Black wants to partner up with someone for a good old-fashioned control deck, but can't figure out why to join.
Some suggestions of my own:
Skinshifter really sells the trope.
Steady Progress, for the flavor text. I'll drop it if Proliferate ends up completely useless.
War Report, for summing up a whole war with one card.