From publisher blurb:
Learn, connect, and reward your animal companions with this supplement. Outfit them with protective gear or train them at a druidic school to become a better master. Master the druidic Disciplines of the Primerion School by following one of three paths, each focused on a different type of relationship with nature:
Follow the Beastmark Trail and embody the beast with new combat techniques.
Accept the Spiritcaller Trail and summon your animalistic spirit into metaphysical form.
Walk the Wildspeaker Trail to protect, communicate with, and speak for beasts.
You'll find the following within the compendium's 21 pages:
Primerion School Lore: detour and explore the druidic school, with history, teachers, students, school life, rivalries, and locations
12 adventure hooks: encounters for students of the Primerion School
3 Discipline boons: gain new boons as characters walk the Discipline paths
24 items: including special thundering horseshoes for your mounts, cute sweaters for pets, and armors for familiars.
6 animal companions: new beasts for when you gain an animal companion or familiar, such as an angry goose, a lightning eel, or a walrus.