Crisis of Breath

One breathing Humanoid you can see must make a Constitution Saving Throw. On a failed save, the target is compelled to purge its entire store of air in one explosive exhalation, and thereby disrupt its autonomous breathing cycle. The subject's lungs do not automatically function again for the duration.   While under the effect of this power, the target can use its Action to gasp for breath and suffer no negative effects. If it does not, the target's consciousness begins fading. The creature can retain consciousness without gasping for breath for a number of rounds equal to its Constitution modifier. The rounds the creature stays conscious do not reset while under the effects of this power.   The target can repeat the Saving Throw at the end of each of its turns, ending the power on a success.   Increased Order. When you manifest this power, you may increase its order by 1 or more. If you increase it by 1, you may target an Animal, Fey, Giant, or Magical Beast. If you increase its order by 2, you may target an Aberration, Dragon, Elemental, Fiend, or Celestial. If you increase its order by 3, you may additionally target a second creature within 20 feet of the original target.