Questions about the Monster Book in other versions.

The Monster Book can't be completed right now.
If you're high-level enough to be collecting, say, skelly cards, then perforce you can't meet King Slime, Alishar, or Papa Pixie to collect their cards.

We need an event that allows "buying" cards of those level-limited pq bosses, to make it even theortically possible to have a complete book.

how about that pq, i've totally blanked on what its called, but you just fight boss after boss, and they gradually get more difficult. I remember seeing a video of it. Does anyone know the pq's name?