There was a brief period of time when this color trio was nicknamed Necra (Necravolver), and after that it was affectionately called Junk (as in: Jund, but replacing red with white makes it bad)
This distribution of trainer gallery cards can individual copies hard to obtain, especially in sets with up to thirty trainer gallery cards
Its a pure nostalgia play aimed at tapping into the brains of people who first got into the Pokmon trading card game as kids when it started, have probably since fallen off, and now have nieces, nephews, or kids of their own, and enough disposable income to be willing to spend money to relive their childhood glory days, or at least get back that beloved foil card they lost, traded away, or had stolen back in the 90s
Chemister's Trick is not in great colors for advantageous blocks, but sometimes you just need opposing blockers to attack and open up your path to victory
Gengar's Screaming Circle lets you get early damage in while you prepare for your Lost Mine turns
Its more likely though, that nobody will be happy with how things turn out except the person laughing manically as they cast it