Initiation Time: 1 action
Range: 30 feet
Duration: Concentration, up to 1 minute
You begin to channel the void, pulling the air from the lungs of a creature within range, leaving nothing in their lungs for them to breathe. One target you choose within range must make a Constitution saving throw. On a failed save, it is restrained as it begins to struggle for breath. On a successful save, the creature is not affected.
A creature restrained by this form must make another Constitution saving throw at the end of each of its turns for the duration. If it successfully saves against this form three times, the form ends. If it fails it saves three times, and it falls unconscious for the duration. The successes and failures don't need to be consecutive; keep track of both until the target collects three of a kind.
If you maintain your concentration on this form for the entire possible duration, the target dies.
This form has no effect on creatures that do not breathe air.