Ars Arcanum

Ars Arcanum (ラストアルカナム) is an ability that appears in Kingdom Hearts, Kingdom Hearts Final Mix, Kingdom Hearts: Chain of Memories, Kingdom Hearts Re:Chain of Memories, Kingdom Hearts II Final Mix, Kingdom Hearts 358/2 Days and Kingdom Hearts Birth by Sleep. It allows the user to attack enemies with a massive combo attack. In Kingdom Hearts and Kingdom Hearts Final Mix, it costs 4 AP to equip and 3 MP to use.

Kingdom Hearts and Kingdom Hearts Final Mix

 * Sora learns Ars Arcanum after defeating Captain Hook in Neverland.

Kingdom Hearts: Chain of Memories

 * Ars Arcanum is an Attack Sleight that Sora learns at level 37.
 * Its card combination is:

Kingdom Hearts Re:Chain of Memories

 * Ars Arcanum is an Attack Sleight that Sora learns at level 42.
 * Its card combination is:

Kingdom Hearts II Final Mix

 * Limit Form has Ars Arcanum as a default ability accessible from the Limit menu.

Kingdom Hearts Birth by Sleep

 * Ars Arcanum is a Deck Command for Ventus.

Kingdom Hearts 358/2 Days
Although Ars Arcanum cannot be performed by any playable character, Xion can perform a modified version of Ars Arcanum in her third form.

Etymology
Ars Arcanum gets its name from the Latin ars meaning 'art' and arcanum meaning 'hidden'. However, as ars has feminine gender in Latin, the corresponding adjective for 'hidden' should be arcana.