The Final Fantasy commander decks are based out of their single games, plus each gets a sizable 25 cards designed for the specific deck
But Mutable Explorer is far, far more powerful, because it creates a Mutavault token
So youd need Jenova to give a creature one of her counters for this to trigger, or put a bunch of mutants in your deck
Shang-Chi, Master of Kung Fu Cards like Training Grounds pull together entire archetypes centered on activated abilities, but Shang-Chi, Master of Kung Fu adds the pseudo-haste ability to further bolster the archetype
While Vaporeon's valuable cards can't compete with some of the most popular Eeveelutions, it maintains a respectable spot among the best Prismatic Evolutions chase cards
Beyond that, Grafted Wargear offers sort of a makeshift sacrifice outlet as you reequip the card, which makes it more than just a generic beatdown card