Dark Aura

Dark Aura is one of Riku's abilities. They come in two different ways. His first Dark Aura is teleporting around the battle field with his weapon in front of him and ending by landing on the ground with a hard slam that creates a shockwave. His second Dark Aura is shooting a ball of darkness at his opponents.

Kingdom Hearts: Chain of Memories
Riku rush enemies repeatedly with blade in hand. It finish off by stabbing the Soul Eater into the ground for a column of light that confuses the enemy. It is only avaliable in Dark Mode

This is the Attack Card requeriment for Dark Aura

Trivia

 * The Dark Aura in Kingdom Hearts II is very similar to Dark Firaga from the previous games.