For my money, Im just glad they are at the uncommon rarity rather than anything more scarce, as I could certainly see a few of them becoming staples of budget Commander mana bases in the future
The world design was beautiful, the characters were interesting, and they introduced a ton of mechanics that were really fun, even if some were pretty hit-or-miss
Theres no reason to play Kess as an all-in combo deck because of this
Almost all the aggro decks also morph out of different directions from this archetpye which gives you white weenie, red deck wins as well as both the go wide aggressive token builds they have
In contrast, this Mana Rock cannot generate colored mana and does nothing to effect the board
Theres plenty of support for whole Commander decks built around this idea, in fact, with new legends like Gwen Stacy Spider leading the way