Lungs of Water

''You spit towards your foe. As the phlegm trickles, your enemy's eyes widen as it coughs up water and begins to suffocate.''

This spell magically creates water inside a victim's lungs, drowning if it cannot cough the stuff up. Creatures that do not need to breathe are unaffected by this spell.

If the target succeeds on a Fortitude save when you cast lungs of water, it is unaffected. If it fails its save, it can still continue to take choking breaths each round with a standard action.

An affected creature can attempt to take actions normally (instead of consciously controlling its breathing), but each round it does so, beginning in the round when it failed its Fortitude save, the subject risks blacking out from lack of oxygen. It must succeed on a Fortitude save at the end of any of its turns in which it did not consciously take a breath. The DC of this save increases by 1 in every consecutive round after the first one that goes by without a breath; the DC drops back to its original value if the subject spends an action to take a breath.

If a subject fails a Fortitude save, it begins to drown (0 hp). In the following round, it drops to –1 hit points and is dying. In the third round, it drowns. Curing spells or powers can revive a dying subject normally, so long as this power's duration has expired; if the power is still in effect, a revived creature is still subject to Fortitude saves in each round when it does not consciously breathe.