While it doesnt scale up quite as perfectly, its also great in a The Mycotyrant Fungus deck for similar reasons
While I dont think your Balthor deck should go super hard on Minions, there are a few of them that you should consider, like Bone Shredder, Gloomdrifter, and Chainer
A combination of the radiation and an overdose of the Forced Evolutionary Virus caused several dozen creatures and a whole computer system to morph into a terrifying monstrosity bent on turning the last remnants of humanity into mindless super mutants
However, Pikachu's popularity in Japan far exceeds other regions, so it's no surprise to see the series' mascot appear with a unique Art Rare
As a longtime fan of both Final Fantasy games and Magic: The Gathering, Im very happy to see the whole franchise get some love
If damage would be dealt to Bloatfly Swarm while it has a +1/+1 counter on it, prevent that damage, remove that many +1/+1 counters from it, then give each player a rad counter for each +1/+1 counter removed this way