Otherworldly Patron (subclass chosen at 1st level — the entity that has granted you power), Pact Magic (unique spellcasting: slots regained on a short rest, always cast at highest slot level, max 5th-level slots), Eldritch Invocations (choose 2 at 2nd level; pick from a list of supernatural boons that modify or augment your abilities), Pact Boon (choose a boon at 3rd level: Pact of the Blade, Chain, or Tome)