From publisher blurb:
The final installment of the Thematic Toolkit line delves in to tactics, darkness, and curses.
Scholars (which appear in Heroes Old and New) can become Tacticians, putting their prodigious intellects to work on the field of battle.
Sorcerers can now become Shadowed, channeling the magic of darkness and curses.
And Wielders (from Manual of Adventurous Resources: Complete) can now access the new Burdened archetype, which has them bonded to an artifact that imposes a terrible curse ... but it can be weaponized against the wielder's foes.
This release also includes three fully-generic synergy feat chains for scholar/sorcerer, scholar/wielder, and sorcerer/wielder multiclass characters and a selection of suggested new skill specialties.