Aero Syphon (エアロアスピル, Earo Asupiru?, lit. "Aero Asper") is an ability in Kingdom Hearts III. It allows the user to recover their MP when Aero damage is taken. The greater the damage taken, the greater the MP recovery.
In Kingdom Hearts III, Aero Syphon is a support ability. It can be multi-installed to increase its effect.
Learning Aero Syphon
Kingdom Hearts III