Formerly "The Eyeblight-Free Cube"
This started as a pseudo-Pioneer/Frontier sort of cube assembled from recent standard sets, way back in the pre-Covid times. That restriction proved to be more limiting than I expected, and I've expanded to include cards that aren't on the reserve list, have been printed in new/M15 borders, and have correct text (this is mainly an issue with red cards & the PW damage redirection rule change).
I'm slowly working towards a power-optimized eternal cube that excludes reserve-listed cards, but I'm a fair bit off of that.
This cube skews towards running higher-powered cards, but I don't play fast mana like Sol Ring, Crypt, etc. I also don't have all of the most expensive cards I could possibly be playing, like JtMS, W&6, Urza, Ragavan etc. This has had the interesting effect of making blue too weak and white too strong at one point, but I've hopefully evened that out. (I won't claim to know what the "best" color/guild/deck/strategy is at any given time.)
Currently, the list tries to support black aggro, artifact aggro, and persist combo. It includes a lot of spells-matter cards in blue and red, and there are several different ways that sort of deck could be built. I'm doing some reanimator in black and cheatyface stuff in red and green, but support is currently light.