They were Pokmon captured and trained by Team Rocket, which corrupted them, which in terms of gameplay, usually raised their attack power while lowering their HP in comparison to their normal counterparts
The only real downside of Cubing with the card is the tracking issue of the initiative and going through the Undercity, but thats not a significant turnoff for me
Seeing as this is the first article in the series, I'll provide a little more backstory as to what happens behind the scenes when new commander decks are revealed
As mentioned in the Collecting Outlaws of Thunder Junction article, with this set's Commander decks, we're moving away from including foil-etched display commanders
Though this particular variant will set you back $137 on average, the same card has been available with different art, but the same game mechanics as far back as Romance Dawn, the first One Piece Card Game set