Faith

Holy (ホーリー), sometimes dubbed as "Pearl" or "Faith", is a technique which appears in Kingdom Hearts: Chain of Memories, Kingdom Hearts II, Kingdom Hearts 358/2 Days, Kingdom Hearts Birth by Sleep, and Kingdom Hearts Re:coded. It usually consists of a burst of white light, causing damage to everything in range, or a sphere of light that homes in on the enemy.

Mechanics
In Kingdom Hearts II, Faith is a Reaction Command usable when Sora is escorting Queen Minnie.

Kingdom Hearts: Chain Of Memories

 * Sora learns Holy at level 42.
 * The card combination is:

Kingdom Hearts Re: Chain Of Memories

 * Sora learns Holy at 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

 * The first recipe can only be melded by Ventus, and has a 100% success rate.
 * Wind Raid (LV5) + Break Time (LV4)

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.

Sidéral