The issue here is that many of the Mystical Archives have an inflated rarity
And because trading cards possess little intrinsic value, the market is strongly tethered to how people feel about the Pokmon franchise, which went through a period of stagnation in the 2000s in which many collectors moved on from the hobby altogether
Cormela is a Storm commander
Void Mirror is more than capable of ruining Eldrazi Tron decks in Modern than don't have any answer to it off the bat, be that a viable counter piece, an Urborg, Tomb of Yawgmoth, or a similar play
Family Matters can also afford to drop a single Plains since there are several creatures and a half-dozen mana rocks helping with ramp and mana fixing
This would align with MTGs history of creating synergy between cards, enhancing gameplay while staying true to Marvels narrative style