pokemon 25th anniversary japanese booster box Pokemon: Collection - Released in 2021 Pokemon Card】25th Anniversary Collection (S8a)

You don't have to choose only one

A special set released similarly to "Generations" in that packs were only available in other product and not via Booster Packs or boxes

(2021-06-18) If Urza's Saga loses all of its chapter abilities but is still a Saga, perhaps due to a card like Blood Moon, it will immediately be sacrificed

Thats because when Trainer Gallery cards debuted in Dream League [SM11b] in 2019, Trainers Pokmon cards (then known as Owners Pokmon) had not been seen in either a main set or subset for more than 13 yearsthe most recent appearance at the time had been in Holon Phantom, a third-generation set

There are also sketches he made while finalizing the design