From publisher blurb:
The Arcane Avenger toolkit provides two new archetypes that can be used with the included synergy feat chain to make a sort of "cosmic warden" character who defends reality against horrible things from outside it.
The Scholar Knight herald relies on education along with conviction to bring down their foes.
The Regulator sorcerer's magical nature makes reality and truth more resilient in their presence.
Either can be played as a stand-alone 20-level character or the archetypes can be combined with the new Arcane Sentinel synergy feat tree which allows any combination of herald and sorcerer (not just these two new ones!) to work as a unified whole, taking advantage of the new features in Level Up for a high degree of synergy and interoperability between the two classes, including new options for Divine Smite and sorcerer Manifestations that utilize the combined abilities to their fullest!