When it becomes public (stack, battlefield, graveyard, exile face up): you swap in the actual double-faced card
More lightning type Pokmon in PTCGP Explore more lightning type Pokmon in Pokmon TCG Pocket and discover their evolution stages.
Trainer Gallery cards are closely linked enough to Battle Partners [SV9] that leading up to and immediately following the release of Battle Partners [SV9], the communitys desire for Trainer Gallery cards increased as well
Proft, Kaya, Kellan, and more have their work cut out for themcan they solve the highest-profile case on Ravnica
So, this is another mechanic I'm not too optimistic about
They are all just alternate art versions of each other, but the fact that Wizards knew to make all 15 show up means a lot and shows just how much they care