On top of having some truly stunning artwork in its immersive card, it also has a very useful attack that will surely become a part of an iconic Grass-type deck in the coming days
As we said earlier, playing a BREAK card onto one of your Pokemon opened up a whole new world of possibilities
Ideally, you should have something that covers one-shot artifact hate (Relic of Progenitus, Tormods Crypt, etc.), the interaction thats hidden in the opponents hand (Endurance, countermagic, etc.), other problematic permanents (Dauthi Voidwalker, Sanctifier en -Vec), and sometimes enchantment with static abilities (Leyline of the Void or Rest in Peace)
Spellslingers can run the problem of lacking a wincon, but Eris being a beater who makes beaters helps us in no short supply
Jigglypuff has only one Move, which is Expand