Quake

Quake (クエイク) is a technique that appears in Kingdom Hearts: Chain of Memories, Kingdom Hearts Birth by Sleep, and Kingdom Hearts Re:coded. It allows the user to generate a small earthquake that also kicks up pillars of rock.

Mechanics
In Kingdom Hearts: Chain of Memories, Quake is a Magic Sleight that inflicts damage on all ground enemies with a violent tremor.

In Kingdom Hearts Birth by Sleep, Quake is an Ultimate attack command that takes up two slots in the Command Deck, has a maximum level of 5, a normal reload time of 20 seconds, and fills the Command Gauge by 30%.

In Kingdom Hearts Re:coded, Quake is a magic command that has a memory consumption of 15% and a reload time of 30 seconds.

Kingdom Hearts: Chain of Memories

 * Quake can be acquired from a Atlantica Bounty.
 * Its card combination is:

Kingdom Hearts Birth by Sleep

 * Terra can create Quake through Command Melding.
 * Terra can purchase Quake from the Moogle Shop for 2500 munny once the command has already been obtained elsewhere.

Kingdom Hearts Re:coded

 * Data-Sora can create Quake through Command Conversion.

Kingdom Hearts Birth by Sleep
Quake is an Ultimate-class Magic Command that can be melded through five different recipes, listed in the Giga Magic Recipe.
 * The first recipe can only be melded by Terra, and is a recipe that has a 30% chance of transforming from Geo Impact.
 * Brutal Blast (LV4) + Brutal Blast (LV4)
 * The second recipe can only be melded by Terra, and is a recipe that has a 10% chance of transforming into Meteor.
 * Brutal Blast (LV4) + Magnega (LV4)
 * The third recipe can only be melded by Terra, and is a recipe that has a 30% chance of transforming from Brutal Blast.
 * Mine Square (LV3) + Binding Strike (LV3)
 * The fourth recipe can only be melded by Terra, and is a recipe that has a 30% chance of transforming from Brutal Blast.
 * Stun Edge (LV3) + Mine Shield (LV3)
 * The fifth recipe can only be melded by Terra, and is a recipe that has a 10% chance of transforming into Meteor.
 * Zero Graviga (LV4) + Brutal Blast (LV4)

Kingdom Hearts Re:coded
Quake is an Magic Command that can be converted through a single recipe.
 * Zantetsuken + Cyclone

Kingdom Hearts Birth by Sleep
In Kingdom Hearts Birth by Sleep, Quake can be used to meld the following command:
 * Meteor Crash

Other appearances
Terra-Xehanort can also use Quake, as he is an extension of Terra. He can also use a variation that generates two earthquakes consecutively.

Origin
Quake is a recurring Black Magic spell in the Final Fantasy series. It usually deals earth-elemental damage to one or all opponents, and may not affect flying enemies, depending on the game.