Shell

Shell (シェル) is an ability introduced in Kingdom Hearts Chain of Memories. It allows the user to grant the status to allies or themselves.

Mechanics
In Kingdom Hearts Chain of Memories, Shell is an enemy card effect that reduces damage from magic attacks by 50%. It costs 50 CP to add to the deck and lasts for five hits.

In Kingdom Hearts Birth by Sleep, Shell is a Dimension Link ability.

In Kingdom Hearts Re:coded, Shell is an Overclock ability that vastly reduces damage from magic attacks.

In Kingdom Hearts 3D: Dream Drop Distance, Shell is a magic command that gives one ally the Shell status for 20 seconds. b° 0° 0° 0° 0° 0° 0° 0° 0° 0° 0° 0° c°

Kingdom Hearts Chain of Memories

 * The Ursula enemy card has Shell as its effect.
 * The Black Fungus enemy card can randomly activate Shell.
 * The Darkside enemy card can mimic an enemy's Shell.

Kingdom Hearts Birth by Sleep

 * The has Shell as its level 2 ability.

Kingdom Hearts Re:coded

 * The Kingdom Key 2.0 and its upgrades have Shell as a level 2 Clock Ability.
 * The Lady Luck and its upgrades have Shell as a level 2 Clock Ability.
 * The Oathkeeper and its upgrades have Shell as a level MAX Clock Ability.
 * The Metal Chocobo: Au and its upgrades have Shell as a level 3 Clock Ability.

Kingdom Hearts 3D: Dream Drop Distance

 * Yoggy Ram learns Shell at level 1.
 * Sir Kyroo learns Shell at level 1.
 * Tatsu Steed learns Shell at level 8.
 * Thunderaffe learns Shell at level 12.
 * Iceguin Ace learns Shell at level 1.
 * Escarglow learns Shell at level 18.
 * Wheeflower learns Shell at level 11.
 * Cyber Yog learns Shell at level 1.
 * Lord Kyroo learns Shell at level 1.
 * Majik Lapin learns Shell at level 9.
 * Aura Lion learns Shell at level 14.

Origin
Shell is a recurring status in the Final Fantasy series. It generally increases the affected character's defense against magical attacks, and it is usually applied with the spell of the same name.