Auto - Potion Auto - Potion is a recurring ability in the " Final Fantasy " series . A character with Auto - Potion will automatically use the weakest Potion available to heal themselves when they are damaged . Appearances . " Final Fantasy IV " . Auto Potion is an Augment in the Nintendo DS version . When a character is equipped with Auto Potion , they will automatically use a Potion to heal themselves when taking damage . It is given to the party when they find Rosa in Kaipo . " Crisis Core - Final Fantasy VII - " . The accessory Doc ' s Code allows Zack to automatically use a Potion when he is in HP Critical . Doc ' s Code is a mission reward on mission 6 - 2 - 5 and can also be stolen from a Kactuare . The Magic Pot encountered in mission 10 - 2 - 3 will ask that Zack to attack itself using : Jump , Fira , Gravity and Assault Twister . The first time done Magic Pot drops the Magic Pot Tricks that adds the Magic Pot summon in the DMW , but the second time it ' ll drop either a Feather Cap or Doc ' s Code . " Final Fantasy VIII " . Auto - Potion is a support ability learned from three GFs : Leviathan , Cactuar , and Tonberry . It costs 150 AP to learn . Items that can be used are : Potion , Potion + , Hi - Potion , Hi - Potion + and X - Potion . Auto - Potion will trigger even in Ultimecia Castle when the regular Item command is sealed . " Final Fantasy IX " . Auto - Potion is a support ability all characters can learn that costs three Magic Stones to equip . The character will use a Potion or a Hi - Potion upon being attacked . The ability can be used in conjunction with the Chemist ability to double the items ' potency . It is learned by Zidane , Freya , Eiko and Amarant for 30 AP , Dagger and Steiner for 20 AP and Vivi Ornitier for 10 AP . It can be learned from the Mythril Vest , Demon ’ s Vest , Running Shoes , Gold Choker , Black Hood , Golden Skullcap , Survival Vest , Magician ' s Robe , White Robe , Running Shoes and Extension . " Final Fantasy X " . Auto - Potion can be customized to any customizable armor by spending four Stamina Tablet items . If a character possesses this ability , they will use a Potion to heal them self when damaged . A nice combination would be to equip the character with Auto - Potion and a weapon with the Alchemy ability , or using Rikku ' s Overdrive to mix a Trio of 9999 to increase the item ' s potency . When the auto - ability is activated , the least powerful Potion available will be used , meaning a player ' s stock of Potion items will be used first . If there are no Potion items in the player ' s inventory , then Hi - Potion items are used , and if there are none , X - Potion items are used . If a person with Auto - Potion in their armor is KO ' d , the item will still be removed from the inventory as if it were used even if it actually wasn ' t . Auto - Potion also appears as enemy ability for Guado Guardian . It can be disabled by successfully steal ing from them . " Final Fantasy XV " . Field Medicine accessory has Noctis automatically use a potion when his health drops below half . " Final Fantasy Tactics " . Auto Potion is a reaction ability the Chemist class learns for 400 JP . When a unit suffers HP loss from an attack , the unit equipped with this ability will use the lowest available Potion in the inventory . A character is not required to have learned to use the Potion in order to use it with this ability . " Bravely Default " . Auto - Potion is an ability that can be used by the Salve - Maker asterisk . It is learned at job level 6 and costs 1 slot to equip . It allows the one to automatically use a potion when they take damage . They must have a potion for this to occur . " Theatrhythm Final Fantasy Curtain Call " . Auto Potion is a Reactive Ability that costs 15 CP to equip . When the HP gauge drops below 50 % , it restores 30 % of the gauge with a Potion from the inventory , and triggers only once during a stage . Auto Potion is learned by Laguna at Level 70 , Cid at Level 75 , Edgar and Vaan at Level 80 , Zidane at Level 85 , Benjamin at Level 90 , and Onion Knight and Bartz at Level 95 .