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
While it doesnt scale up quite as perfectly, its also great in a The Mycotyrant Fungus deck for similar reasons
The other difference is that Palmer's Contribution is a Supporter rather than a Trainer, like Night Maintenance, which can be a drawback-- for example, you can't use Bebe's Search or Roseanne's Research during the same turn to immediately retrieve a portion of what you just shuffled back into your deck
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
And, of course, the other fan-favorite, Magnus the Red, is a fantastic build-around if you want to make a spell-slinging deck with all the support we already had in this deck