Armor Break ( ability ) Armor Break , also known as Vit 0 , and Rend Armor , is a recurring ability in the " Final Fantasy " series , that reduces the target ' s Defense . Appearances . " Final Fantasy IX " . Armor Break is a Sword Arts ability , used by Steiner . It costs 4 MP to use , and can be learned for 30 AP from the Mythril Sword . It has a 50 % accuracy rate , but can be used repeatedly . It halves the target ' s defense . " Final Fantasy X " . Armor Break is found on Auron ' s section of the Sphere Grid . It attacks and sets the target ' s Defense at 0 , as well as nullifying " Armored " , meaning that even non - Piercing weapons deal normal damage . The inherent armor property of armored enemies cuts physical damage to 1 / 3 if attack is not Piercing . Auron ' s Banishing Blade Overdrive alongside Frag Grenade ( whether by Using or Mixing ) are the two only attacks in the game that have 100 % chance of inflict Armor Break , in contrast to Armor Break skill that not always inflicts this effect . " Final Fantasy X - 2 " . Armor Break is available via the Warrior dressphere , but it ' s weaker than it was in " Final Fantasy X " , reducing the target ' s defense , but not completely eradicating it . It costs 4 MP to use and 30 AP to learn . While damaging the target , it also reduces the target ' s defense by 2 which be stacked up to 10 . It can also be used via Lady Luck ' s Attack Reels by rolling a Cherry . It also appears in the form of Armor Eraser , usable by Mascot Rikku , which targets all enemies and reduces their Defense by 3 . However , Armor Eraser does not inflict damage . " Final Fantasy XI " . Armor Break is a Great Axe Weapon Skill which lowers Defense . Another Great Axe Weapon Skill is Shield Break , which lowers Evasion . " Final Fantasy Tactics " . Rend Armor is an ability learned by the Knight class for 400 JP . It has an instant cast time , an effect of 0 , and its range depends on the equipped weapon ' s range . It attempts to destroy the target ' s equipped armor , and in the PSP version , will deal regular physical damage to monsters as well . Rend Armor is an ability learned by the Master Monk for 350 AP from the Cypress Pole . It attempts to destroy the target ' s equipped armor and has a range of 1 . In addition , it is also used by the Reaver , which in addition to trying to destroy the target ' s armor , will also inflict non - elemental physical damage . The Scholar ' s Subdue ability halves all enemies ' defense for three turns at the cost of two AP . Subdue is the second ability learned on the job . The Scholar ' s ultimate ability , Tame , reduces the enemies ' defense to 1 , but it only works for one turn . " Bravely Default " . The move Shell Split can be used by the Black Axefighter and anyone with the Pirate asterisk . It multiplies the physical defense of an enemy 75 % . " Theatrhythm Final Fantasy Curtain Call " . Armor Break will appear as an ability within the game . " Final Fantasy Brave Exvius " . Armor Break is a Support - type special ability that costs 7 MP to cast and deals , to a single enemy , physical damage ( 1 . 2x ) while also reducing its DEF ( 15 % ) for the following three turns . The following units can learn Armor Break : Cloud of Darkness ( 4★ , level 14 ) , Duane ( 4★ , level 34 ) , Leo ( 3★ , level 35 ) , Ludmille ( 4★ , level 42 ) , Russell ( 3★ , level 22 ) , Skaha ( 3★ , level 17 ) , Vaan ( 4★ , level 43 ) , Xiao ( 4★ , at level 17 ) , and Raggles ( 3★ , level 20 ) .