They're not connected to a specific event or promotion, which means these stores are free to do whatever they want with them
Spirit Dragon is surprisingly strong
However, when used after setting up a KO, it can finish off an opponent's Pokmon, which allows players to utilize Professor Turo's Scenario to return a damaged Pokmon to their hand and avoid a KO
Although both are Psychic-type Pokmon, their setup strategies are quite disparate
They could be tech cards like Super Polymerization/De-Fusion or even engine cards like Thunder Dragon Fusion and Shaddoll Fusion
Theyll be a great addition to your deck if youre already in their respective color pairs, and they can help to enable splashes, but otherwise they dont do anything useful