Berserk ( ability ) Berserk , also known as Bersk or Bserk , is a spell which inflicts the Berserk status effect . The spell itself is not confined to one specific class of magic . Appearances . " Final Fantasy II " . Berserk is a Black Magic spell which increases the attack power of one or all allies in battle , allowing them to inflict more physical damage per hit . This increment increases with the spell ' s level and with the intelligence of the caster . The effect can stack , however repeated use on the same character ( s ) will increase the chance the spell will miss . Unlike later editions , the player retains control of berserked characters . Any character can learn Berserk by having them use the Berserk Tome ( called the Berserk Scroll in the " Origins " release ) . Berserk III is used exclusively by Magician , while Berserk VI is used exclusively by Gottos . " Final Fantasy IV " . Berserk is a White Magic spell that can be learned by Rosa at level 20 in 2D versions , and level 30 in the 3D versions ; Porom at level 29 ; and Fusoya initially . It has a casting time of 1 . It cost 18 MP to cast in 2D versions , and 15 MP in the 3D versions . In addition to the Berserk spell and Bacchus ' s Wine item , the Avenger sword makes the wielder permanently Berserked until unequipping it . In the 2D versions it has a 100 % accuracy , and in 3D versions it has 50 % versions . It increases the target ' s Strength by 50 % as long as they are in the status . Berserk can be cast by Elder Treant , and it only uses it on its own party . " Final Fantasy IV - Interlude - " . Berserk returns as a White Magic spell in the sequel of " Final Fantasy IV " . Rosa and Porom already known the spell . It inflicts Berserk to a single target at the cost of 15 MP . Berserk returns as a White Magic spell that is learned at level 20 for Rosa , level 18 for Porom , level 23 for Leonora , and initially learned by Fusoya . It costs 18 MP to cast . " Final Fantasy V " . Berserk is a level 5 White Magic that costs 8 MP to cast , and can be bought in Moore for 6 , 000 gil . Berserk is also an ability Berserker can learn , which gives the character Auto - Berserk . Berserk can be cast by Enuo , Fury , Mammon , and Treant . The player may utilize this ability by catching and releasing a Mammon . Berserk is one of the spells that can be cast from the Wonder Wand for free . " Final Fantasy VI " . Berserk is an Effect spell that costs 16 MP and can only be learned from the Phantom Magicite at x3 learning rate , though Celes can learn it naturally at level 40 . It has a hit rate of 150 and is vulnerable to Runic . Berserk can be cast by Level 50 Magic , Abaddon , and Flan Princess . " Final Fantasy VII " . Berserk can be cast on enemies via the Mystify Materia . It costs 28 MP to cast . When cast on enemies it has 80 % success rate , but when cast on allies it hits 100 % of the time . " Final Fantasy VIII " . Casting Berserk in battle increases compatibility with Doomtrain by 1 and with Siren by 0 . 6 , but lowers compatibility with Cerberus and Carbuncle by 0 . 2 . When Magic Booster is used in the 2013 PC re - release , the player ' s inventory gains 100 Berserk spells , among other basic spells . " Final Fantasy IX " . Berserk is a White Magic spell that inflicts the Berserk status . Dagger learns it from the Magic Racket for 30 AP , and the spell costs 6 MP to cast . It can be reflected and works with Return Magic . Armstrong and Ozma can both cast Berserk . The spell has a 75 % Accuracy rate . " Final Fantasy X " . Berserk is a spell only available to Biran Ronso , Black Element , and Guado Guardian ( B ) . It cannot be inflicted directly by characters . " Final Fantasy X - 2 " . The Berserker dressphere has Berserk as a command ability , and the girl can choose to inflict the status on herself during a battle . Berserk can also be cast on enemies through Yuna ' s Festivalist dressphere ability Flare Sandals , though the outcome of the spell is random . The Fury Shock accessory lets the user cast Berserk . The Warrior ability Assault also casts Berserk on the party , along with Haste , Shell , and Protect , making it useful for quickly disposing of weaker enemies . Berserk can be cast by various enemies in this game , and appears more often than in the previous installment . Anyone afflicted with Berserk also receives 25 % boost from recovery items . Berserk is an unique ability that can be used by any character when using the Berserker dressphere as the main dress , it costs 4 MP to cast . It makes the character enter the Berserk status on command , but it will fail if the character has the Berserkproof auto - ability . " Final Fantasy XI " . Berserk is a specific job ability for Warriors . Rather than having the character attack relentlessly , it increases Attack power and simultaneously reduces Defense power . Dolls have an ability with the same name . However , their Berserk is actually a different ability entirely , causing the effect of Warcry on the user . " Final Fantasy XII " . Berserk is an Arcane Magick 2 license costing 25 LP . The spell costs 1 , 000 gil , and casting it expends 10 MP . It makes the afflicted united stronger and faster , but loses the control of said unit . In the " International Zodiac Job System " version , Berserk is a Time Magick 7 license , costing 80 LP , and can only be used by Time Battlemage . Berserk is an ability learned by Ba ' Gamnan at level 12 and it inflicts the Berserk status on a single ally for 20 seconds . " Final Fantasy Tactics " . Berserk is an ability learned by the Templar job for 200 JP . It inflicts Berserk to one target with a range of 4 for 16 MP . " Final Fantasy Agito " . Berserk appears as a White Magic spell and costs 2 AP to cast . Berserk functions similar to the Bravery spell and gives a character a physical attack boost of 10 % . The spell can be given to any character by having a Berserk Tome in the character ' s inventory . The spell can only be purchased for 1 , 000 gil in Guera at night . " Bravely Default " . Berserk is a Piracy ability learned by Pirates at job level 7 . It makes the character in Berserk status , dealing 50 % more powerful normal attacks for six turns . The increased power of physical attacks does not stack with other physical attack boost effects . It does not cost MP . " Theatrhythm Final Fantasy Curtain Call " . Berserk appears as a reactive augment ability . There are three levels of this ability , each level increasing the wielder ' s stats by 50 Strength points . It is learned as an initial skill by Sephiroth . Other appearances . " Kingdom Hearts " series . Berserk is an ability in ' , ' and ' as the effect of the Hades card , and ' as an effect of the Zack D - Link . Berserk raises the user ' s attack strength when they are low on HP .