Deep breath

Deep breath was a spell that filled a creature's lungs with air and allowed them to hold their breath for a supernatural length of time. The reverse of this spell was steal breath, which forced all air out of a target's lungs.

Effects
The spell had two forms. The older version allowed the caster to touch a creature and imbue them with the ability to inhale a magically huge amount of air that could sustain them for minutes, or to fill their lungs with such an amount of air if they were already holding their breath. A newer version&mdash;sometimes called air bubble &mdash;would only fill one's own lungs with air, but then would continue to refill them with conjured air for a short time. In either case, the recipient of the spell had no need to breathe for the spell's duration (which was determined by the experience of the caster). This prevented suffocation and provided defense against most mundane and magical gasses. The spell did not impart any additional ability to move or navigate in environments without air.

Components
The older variant of the spell had a short verbal and somatic component, and required a small animal bladder filled with air as a material component. This bladder was popped over the mouth of the spell's recipient.

The newer variant of the spell required only a quick verbal utterance, allowing it to be cast almost instantaneously.

History
It was rare to encounter a priest who knew the deep breath spell on Toril, although it was more common on Athas.

In the mid-to-late 14 century DR, the material components for this spell could be purchased from places like Aurora's Emporium for 5 copper pieces per bladder.