Mega Flare

Mega Flare (メガフレア) is a technique that appears in Kingdom Hearts: Chain of Memories, Kingdom Hearts Birth by Sleep, Kingdom Hearts Re:coded, and Kingdom Hearts 3D: Dream Drop Distance. Once used, the caster fires a fireball that creates a blinding, screen-distorting explosion that heavily damages all enemies on-screen, dealing Fire-type damage.

In the international and Final Mix releases of Kingdom Hearts Birth by Sleep, the power of Mega Flare was reduced from the original Japanese release for the purpose of balancing combat.

Kigndom Hearts: Chain of Memories
In Kingdom Hearts: Chain of Memories, Mega Flare is an Attack Sleight that can be used by Sora.
 * Its card combination is:

Kingdom HEarts Birth by Sleep
In Kingdom Hearts Birth by Sleep, Mega Flare is an Ultimate magic command that takes up two slots in the Command Deck, has a maximum level of 6 and a normal reload time of 50 seconds (25 seconds in the original Japanese version), and fills the Command Gauge by 55%.

Kingdom Hearts Re:Coded
In Kingdom Hearts Re:coded, Mega Flare is a Type A Overclock Finisher. It is more powerful when used at higher Clock levels.

Kingdom Hearts 3D: Dream Drop Distance
In Kingdom Hearts 3D: Dream Drop Distance, Mega Flare is a magic command that uses two slots in the Command Deck, and has a reload time of 46 seconds.

Kingdom Hearts: Chain of Memories

 * Sora can learn Mega Flare when he reaches level 52.

Kingdom Hearts Re: Chain of Memories

 * Sora can learn Mega Flare when he reaches level 57.

Kingdom Hearts Birth by Sleep

 * Terra, Ventus, and Aqua can create Mega Flare through Command Melding.

Kingdom Hearts Re:coded

 * Data-Sora can find Mega Flare in a Rare Prize Box in Library 2.

Kingdom Hearts 3D: Dream Drop Distance

 * Sora can use Mega Flare during Dive Mode.
 * Can be obtained from Tyranto Rex's link board.

Kingdom Hearts Birth by Sleep
Mega Flare is an Ultimate-class Magic Command that can be melded through one recipe, listed in the Giga Magic Recipe.
 * The recipe can be melded by Terra, Ventus, and Aqua, and is a recipe.
 * Fission Firaga (LV4) + Crawling Fire (LV4)

Origin
Mega Flare is a recurring attack in the Final Fantasy series. It often appears as the Summon creature Bahamut's signature attack. It is depicted as an upgraded form of the Flare spell, and deals massive non-elemental damage to all enemies.