Faith

Holy (ホーリー), sometimes dubbed as "Pearl" or "Faith," is a technique introduced in Kingdom Hearts: Chain of Memories. It usually consists of a pillar of white light bursting from the ground, causing damage to everything in range, or orbs of light that home in on the enemy.

Mechanics
In Kingdom Hearts: Chain of Memories, Holy is a Magic Sleight. It summons forth a pillar of light around Sora, then summons others beneath the enemies. The pillars have a wide radius, and can damage several enemies at once if they are close together.

In Kingdom Hearts II, Faith is a Reaction Command usable when Sora is escorting Queen Minnie. It consists of Queen Minnie summoning a large pillar of light to rise from the ground on the nearby Heartless, and drive them away. King Mickey also has a variation of Holy called Pearl that he uses during battles when Sora is defeated. He shoots a ball of light at the opponent.

In Kingdom Hearts 358/2 Days, Holy is the King's Limit Break. It consists of him jumping a few feet off the ground, then summoning hovering orbs of light which orbit him and shield him from enemies, as well as a pillar of light to rain down on the enemies. The Final Limit creates a storm of light around the pillar, with greater range but less accuracy. By holding down the button, the pillars can be "charged", becoming one huge pillar surrounded by three thinner ones, and the orbs will be fired off in every direction as a projectile attack.

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

In Kingdom Hearts Re:coded, Faith is a Type A Finish command used by Data-Sora. It consists of him summoning pillars of light that repeatedly hit a single enemy by pressing the button.

In Kingdom Hearts 3D: Dream Drop Distance, Faith is a magic command exclusive to Sora that uses two slots in the Command Deck, and has a reload time of 40 seconds.

Kingdom Hearts: Chain of Memories

 * Sora can learn Holy as a sleight when he reaches level 42.
 * The card combination is:

Kingdom Hearts Re: Chain of Memories

 * Sora can learn Holy as a sleight when he reaches level 47.
 * The card combination is:

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 uses 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 the Cave / Entrance System Sector for 600 SP.

Kingdom Hearts 3D: Dream Drop Distance

 * Faith can be obtained in Aura Lion's Ability Link for 10 Link Points after obtaining the Secret orb for 250 Link Points.

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 Holy 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.