Lumbering Lightshield, for instance, makes a random spell cost 1 colorless mana more to cast no matter where it is, even if it ends up in the Graveyard
It states that whenever it mutates, its controller may cast a noncreature spell with a mana value of three or less from their graveyard without paying its mana cost
Even if no additional catalysts were to emerge, as the generation for whom Pokmon holds the most cultural resonance (mostly younger millennials) advances in their careers and comes of age financially, one could easily imagine an increasing amount of capital chasing a limited number of Pokmon grail cards
Custodi Soulcaller and Wings of the Guard love Tymna the Weaver
I guess we can always look forward to this artists' cards, and keep a keen eye on them as valuable pulls
Another possibility would be more Collectors Edition cards (with gold borders)