Faith

Faith (ホーリー), sometimes dubbed as "Holy" or "Pearl," is a technique introduced in Kingdom Hearts: Chain of Memories. It typically allows the user to attack foes with one or more pillars of light.

Mechanics
In Kingdom Hearts: Chain of Memories, Holy is a Magic Sleight. It summons a pillar of light around the user, then summons three more sequentially beneath targeted enemies. The pillars have a wide radius, and can damage several enemies at once if they are close together. Its card combination is:

In Kingdom Hearts II, Faith is a Reaction Command usable when Sora is escorting Queen Minnie. When used, Queen Minnie summons a large pillar of light under her and Sora, damaging and knocking away nearby Heartless. King Mickey also has a variation of Holy called Pearl in which he shoots a ball of light at the opponent. He uses Pearl during battles when Sora is defeated.

In Kingdom Hearts 358/2 Days, Holy is the King's Limit Break. It allows him to summon pillars of light that can be charged with for more power. His Final Limit allows him to charge it further to summon a triangular formation of four large pillars of light, as well as orbiting orbs of light that fly outwards from the center.

In Kingdom Hearts Birth By Sleep, Faith is an Ultimate exclusive to Ventus that summons pillars of light in a circle around the user, then expels them outwards to damage enemies and restore the user's health. It takes up two slots in the Command Deck, has a maximum level of 6, has a normal reload time of 25 seconds, and fills the Command Gauge by 20%.

In Kingdom Hearts Re:coded, Faith is a Type A used by Data-Sora. It allows the user to summon pillars of light that repeatedly hit targeted enemies.

In Kingdom Hearts 3D: Dream Drop Distance, Faith is a exclusive to Sora that allows the user to summon a circle of light pillars that spin outwards, dealing  damage. It also restores a small amount of HP as a Cure-based technique, and can therefore be enhanced by equipping Cure Boost. Faith uses two slots in the Command Deck and has a reload time of 40 seconds. It grants +4 to and +30 to Light Resistance when attached to a Dream Eater recipe.

In Kingdom Hearts χ, Holy and Holy+ are card techniques that are exclusive to SR+ cards and hit the enemy twelve times.

Kingdom Hearts: Chain of Memories

 * Sora can learn Holy after reaching level 42.

Kingdom Hearts Re: Chain of Memories

 * Sora can learn Holy after reaching level 47.

Kingdom Hearts II

 * Mickey Mouse uses Pearl as an Action Ability.
 * Minnie Mouse uses Faith as a Reaction Command.

Kingdom Hearts 358/2 Days

 * Mickey Mouse has Holy as his Limit Break.

Kingdom Hearts Birth By Sleep

 * Ventus can create Faith through Command Melding.

Kingdom Hearts Re:coded

 * Data-Sora can purchase Faith from Agrabah: Sector A for 600 SP.

Kingdom Hearts 3D: Dream Drop Distance

 * Sora and Riku can purchase Faith from the Aura Lion Ability Link for 790 Link Points.
 * Sora and Riku can purchase Faith from the Flowbermeow Ability Link for 480 Link Points.

Kingdom Hearts χ [chi]

 * The player can use Holy with a SR+ King Mickey card, No. 90.

Kingdom Hearts Birth by Sleep
Faith is a Ultimate-class Magic Command that can be melded through one recipe, listed in the Giga Magic Recipe.
 * The recipe can only be melded by Ventus, and is a recipe.
 * Wind Raid (LV5) + Break Time (LV4)

Kingdom Hearts 3D: Dream Drop Distance
Minnie uses the Faith ability to escape from Pete's clutches after he is momentarily distracted by one of Lea's chakrams.

Origin
Holy is a recurring spell in the Final Fantasy series. In most games, Holy has the distinction of being the only White Magic spell to be used offensively. Its divine power is most effective against both dark-aligned and undead creatures.