There are three Tag Team cards out of this set which do something with art that no other GX has done to date.
Specifically, cards 161, 165, and 170.
I'll wait while you look at them...
These cards are not the blank-background FAs, but they also aren't RAs.
Every "Regular Art" GX or GXTT has an energy-color bar at the top and bottom, preventing them from being "Full Art." Several come very close to completely obscuring these bars, but there is always some trace of them at least.
These three lack those bars, without obscuring the area, so should be Full Art cards, but they have a different design than every other GX FA.
"Swishonk!" That's what's happening!