I find most constructed (modern and legacy) creatures tend to underperform in cube since they are either combo pieces or undercosted beaters that come w deck building restrictions to fully take advantage of
Focus on fun, and the rest will sort itself out
Aetherdrift Collector Booster Box A racing-themed set unlike anything else in Magic
This doesnt mean that all the cards in Ultimate Masters will hold their current values they absolutely wont but if youre looking for an Imperial Recruiter situation where a $300 card drops to $28 simply because there werent enough copies to go around before and there are now, you arent going to find too many of them here
ie V, Vmax, Trainer Gallery, Ex, Vstar, Illustration Rare, Special Illustration Rare, Full Art Trainer, EX