Last Gasp (M2, T2)
Source
Fly Free or Die: Professional Courtesy pg. 52
You can cast last gasp as a reaction when a creature within range would die from suffocation. They instead begin attempting Constitution checks as though they had just run out of air (including resetting the DC of such checks to 10).
Dragonscript
ID
e2900454b14f744a8e2e42d2
Effect
append 'ea82bc436db93c2f198292b8' to character.spells;