I came across this card while doing a Stadium themed Secret Santa on E4
A bit more digging made me realize that there was a whole concept of Parallel city in some of the expansions, namely Blue Shock and Red Flash. The concept was to show a contrast between the two cities.
In the future expansions, this parallel city also started “leaking” into each other, startling some of the Pokemon and even allowing Pokemon to cross through.
Overall a very neat concept which ties across different expansions! Cheers!
