Without getting too deep into the mechanics of the Pokmon trading card game, a GX Pokmon is more powerful and has higher HP than usual
this card can make up to 3 attacks on monsters during each Battle Phase this turn
Double Colorless Energy (Staff) Name: Double Colorless Energy 90/108 (North America Championships) [Staff] Year released: 2016 Card Value: $148.95 These cards were gifted to players and staff between 2016-2017
Lets combine that ability with a truly ugly creature thats only in about 8,000 decks on EDHREC, Nantuko Vigilante
The problem is, you learn quick that after a certain point in the game, all you need is Light and Thunder cards, and maybe a few spell casters
While not as flashy as the other examples, there are plenty of artifacts with enter the battlefield or leave the battlefield effects that you can abuse