Withstand Combo

Once More (コンボリーヴ) is an ability introduced in Kingdom Hearts II. It allows the user to retain 1 HP after being attacked by a combo that would normally finish them off, provided they have more than 1 HP beforehand.

Once More is invaluable for facing certain bosses, particularly those that attack quickly and relentlessly.

Mechanics
In Kingdom Hearts II, Once More is a that costs 4  to equip.

In Kingdom Hearts Birth by Sleep, Once More is a that can be equipped once.

In Kingdom Hearts Re:coded, Once More is an accessory ability.

In Kingdom Hearts 3D: Dream Drop Distance, Once More is a that can be equipped once.

Kingdom Hearts II

 * Double-Keyblade Roxas has Once More as a default ability.
 * Sora learns Once More at level 25 with the Dream Shield, level 28 with the Dream Rod, and level 47 with the Dream Sword.
 * Goofy learns Once More after defeating Oogie Boogie in Christmas Town.
 * Auron has Once More as a default ability.
 * Aladdin has Once More as a default ability.
 * Riku has Once More as a default ability.

Kingdom Hearts Birth by Sleep

 * Once More can be attached to a or  Command recipe through Command Melding, either randomly or by applying a Wellspring Crystal.

Kingdom Hearts Re:coded

 * The Immortal Charm has Once More as its ability.

Kingdom Hearts 3D: Dream Drop Distance

 * Sora and Riku can purchase Once More from the Drak Quack Ability Link for 150 Link Points.
 * Sora and Riku can purchase Once More from the Flowbermeow Ability Link for 300 Link Points.
 * Sora and Riku can purchase Once More from the Tyranto Rex Ability Link for 300 Link Points.

Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage-
Aqua will survive combo hits with 1 HP by default.