This could be whoever generated the most lore in the game, or perhaps you could play a regular game of Lorcana to decide.
My gut says well end up with some combination of a nostalgia/story card and a Modern staple, hence my timid tabling of something like Vengevine + Garruk, Wildspeaker as cards that could use the reprint and fit into the EV modeling
Mew is a perfect, faultless, innocent interdimensional baby and must be protected at all costs
Otherwise, you can also position Leafeon-ex in the Active position, as it can pass one energy to one of your Pokmon on the bench each round with its ability Forest Breath
Previously there was no official release event for stores, but many held their own
Kaiba, intent on claiming the cards for himself to secure his title as the strongest Duelist, agreed, accepted "Obelisk the Tormentor" given to him by Ishizu, and organized the Battle City tournament