Firebending has lightning
Earthbending has metalbending
Waterbending has bloodbending
How the hell are we going to escalate airbending? Because I want to see it.
vacuum-bending. However, no airbender in the modern age is cruel enough to suffocate the life from an opponent.
Like changing the tones of sounds, deafening, an completely altering voices. But the suffocation/void thing is a skill that Should be available to air benders, and should be explored.