This article is about the Link Attack.
You may be looking for the attack that is part of a limit.
Gif of Comet

Comet (コメット Kometto?) is a technique in Kingdom Hearts 3D: Dream Drop Distance. It allows the user and their Spirits to ride a meteor and crash into the ground.

Mechanics

Comet is a Dual Attack that deals Fire-elemental damage.

Learning Comet