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.

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 his HP is critically low. 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.

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 Orunitia 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 Tablets. If a character possesses this ability, s/he will use a Potion to heal him/herself when damaged. A nice combination would be to equip the character with Auto-Potion and a weapon with the Alchemy ability to double the items' potency.

When the auto-ability is activated, the least powerful Potion available will be used, meaning Potions will be used first. If there are no Potions in the player's inventory, then Hi-Potions are used, and if there are no Hi-Potions, X-Potions are used.

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 learnt to use the potion in order to use it with this ability.