I did a little research into the process beforehand but was greeted with conflicting information and 30min long Youtube videos so I figured Id summarize my experience, give some tips and relay some information I was told from the associate (Which may or may not be true)
When asked if there is a future when collectors will attempt to assemble complete registries, Petipas appeared confident
You can only use this effect of "The Undying Legion" once per turn
The Level of the shown Ritual Monster becomes the targeted monster's Level, until the end of this turn (even if this card leaves the field)
And, while the first four Gym Leaders are most prevalent in this set, with the other four being more prevalent in the following expansion, Gym Challenge, Sabrina, and Blaine are notable leaders in this set as well, likely for balance reasons
My favorite Pokmon card artist made a completely honest assessment of my work and totally wasnt just being polite, and it turns out I do have a gift for the arts, after all