It is a compilation with the mega evolutions, Origin forms and Arceus fairy type.
The sprites are among those created by Game Freak, publicly available on Pokémon Showdown, and the Mega Evolutions of Pokémon Z-A are divided among the creators [KingOfThe-X-Roads] https://x.com/kingofthexroad5 and [RetroNC] https://youtube.com/@retronc Both approving the use of their sprites and requesting to be named.
💧Kalos(Gen6)💗Galar(Gen8)🔴Paldea(Gen9)
by Ratclife