Causes Non-elemental damage to all enemies.Final Fantasy IX description
Stock Break (ストックブレイク, Sutokku Bureiku?) is a recurring ability in the series. Originally appearing as Sword Arts and Seiken ability, it is now regularly seen used by Adelbert Steiner and Beatrix, generally differentiated as Sword Art∙Stock Break for Steiner and Seiken Stock Break for Beatrix. It is a powerful attack that inflicts major non-elemental damage to the entire opposing party.
Stock Break is an ability of both the Swd Art and Seiken skillsets, which inflicts damage equal to x1.5 normal damage to all enemies, dealing higher damage the higher the user's Spirit stat is. In addition, the attack takes on the element of the user's weapon. Beatrix owns it by default, and Steiner learns it for 35 AP from the Ultima Sword and Excalibur II. It costs 26 MP to use.
The Swd Art version's damage formula is as follows:
Stock Break is an enemy ability used by Beatrix during the first two battles with her, which reduces the party's HP to 1 and ends the battle. A more powerful version is used by Cursed Beatrix, which inflicts heavy non-elemental damage to the party.