Mantra

In the Digital Devil Saga: Avatar Tuner series, a Mantra is a package of one to four skills that is purchased from a Karma Terminal. Once a character purchases a Mantra, they can assign that Mantra as their current Mantra; they will then assign AP to that Mantra after victory in combat. After enough AP is assigned to the Mantra, that Mantra is mastered: the character learns its skills and can assign them to his or her skill slots, and in most cases can purchase more advanced Mantras that require the mastery of that Mantra as a prerequisite for purchase. A few Mantras can only be purchased after specific optional bosses are defeated; these Mantras have no other prerequisites.

Each character, when first recruited to the party, begins with one or more Mantras mastered and one non-mastered Mantra assigned.