A collection of specializations for the classes (one each) of varying quality. I like a lot of the ideas here but mechanically many of them fall short. The Barbarian getting ki points, but not describing how they work with multi-class acquired ki points is troublesome. The bard has a bunch of abilities that are all quite lengthy and would require re-reading them any time the player wanted to use it. The Journey Domain tracks how far a player has moved to gain charges, which is functionally difficult. It just goes on from there.

I'm rating this three stars because it could be better, with a lot more work. The ideas and themes are fantastic, but it's just the execution that is flawed.

This supplement is full of fun ideas. If you're more interested in flavor than numbers in D&D, I think you'll enjoy it, too.