Id remove the populate pieces to head in this direction
The starter decks are a fantastic way for new players to jump into the game
Theres only one set of 226 cards at the moment, called Genetic Apex, plus a handful of Trainer cards
While it might seem odd to toss in a slow value engine into a list that can play blisteringly fast, it is actually this consistent-yet-explosive mana package that makes Training Grounds so good here
We do allow WCD (World Championship Deck) and 30th Anniversary Edition.
Holon Mentor and Holon Legacy both fit well within the Holon engine model of building decks, as did the energy spread that included Holon Energy FF, Holon Energy GL, Holon Energy WP, as well as Boost Energy, Scramble Energy, and Rainbow Energy