You can pull Pokmon ex cards, SAR cards, and other collectible hits, including popular Pokmon like Mega Gengar and Pikachu
For that reason, Lure Prey is an incredible upgrade to any green Commander deck thats trying to get massive haymakers into play ahead of time
It may be only useful for pure Goblin tribe decks, another idea, inspired by Dragon Fodder, would be to create a Dragon deck where the Goblins serve in parallel as prey and maintain a steady onslaught while the flying Lizards cause chaos and damage
cards from the precon that are either significantly underpowered or seem intended for a different style of deck
However, when Kaiba (or eventually Yugi) sacrifices two monsters on the field, Obelisk's attack grows to infinity, so any attack results in an instant win
While Mega Gardevoir ex could end up becoming somewhat popular, I doubt it will have the same dominance as Gardevoir ex did