Stratosphere

Stratosphere is a technique that appears in Kingdom Hearts Birth by Sleep. It allows the user to dive into enemies from the air.

The "Stratosphere" is one of the Earth's atmospheric layers, while "Celestial" refers to things related to the sky or heavens.

Mechanics
Stratosphere is a Level 6 that is used exclusively by Ventus. When using Stratosphere, Ventus will perform a downward strike. Up to four additional attacks can be added by pressing randomly chosen face buttons when prompted. When performed successfully, Ventus will fly high in the air and dive down, followed by a burst of wind that will damage all enemies on the screen.

Kingdom Hearts Birth by Sleep

 * Ventus learns Stratosphere after defeating 800 enemies with Air Flair 4 as the equipped Finish command.