Haha, cool suggestions, but honestly, I chose the proxy alterations to be low maintenance / easy to apply. Putting all the art through a filter means extra work, especially if you want to do a palette swap instead of an "easy" filter. I've been doing some Google searches, and palette swapping isn't easy at all. Flipping the art is just one of those cues that might look silly, but it just so triggers that subconscious "something is off here" feeling in enfranchised players and it's trivial to implement
As for the rarity restriction, this is my blurb when I introduce the cube to my drafters:
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The Heritage Cube is a Peasant cube where you can permanently mod (alter) the cards you draft. An individual card can be modded up to a maximum of two times. Previously modded cards can be recognised by the following alterations:
- The card name is preceded by one asterisk (for one mod) or two asterisks (for two mods).
- The rarity of the card is changed to rare (for one mod) or mythic rare (for two mods).
- The art of the card is flipped when compared to the original.
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I started it as a Peasant cube, based on the theory that the mods will 'rarify' your cards for you. A card like the Audacious Thief above feels rare in power level, even though it's baseline is decidedly not. While I like option 2C in theory, there are enough strong commons in the cube that
reallydon't need a third mod. The Audacious Thief above is, again, a good example, but there's also a 3/1
Faerie Seer floating around. I was able to get in a few drafts before COVID-19 hit the world, and didn't get a single question about the rarity distribution in my cube, so I actually think the current approach is pretty clean in practice.
Note that I don't mean to say your idea is
not clean, because it totally is! I'ld love to see someone try out that variant, but if anyone does, be very aware of the commons you put in your cube. Modding a card three times is
really strong!