The way in which you reach chapters is by adding or subtracting lore counters to the Saga, which automatically happens upon entering the battlefield or after the draw step
Each type has its strengths, and these strengths can be combined with other Ink types, though each deck can only have two types
There are a number of cards I think have potential, but a lot is going to depend on rotation, potential bans, and how powerful the upcoming three Standard sets of this year will be.
Disney Lorcanas seventh set features a mysterious Owl-cloaked figure and the first dual-ink cards
Azurite Sea in particular, some iconic characters have been reimagined as pirates and inventors
You can travel to iconic locations, confront powerful monsters, and even ride on the back of a chocobo