You inhale all air in the surrounding area, stealing the breath of nearby creatures. During vacuum 's duration, you take a –1 circumstance penalty against inhaled threats, such as inhaled poisons. If you cast vacuum in an environment where you can't breathe, the spell fails and you immediately begin to suffocate.
Creatures in the area must attempt a Fortitude save. A creature that's holding its breath gets a result one degree of success better than it rolled, and creatures that don't need to breathe air are immune to the spell. A creature that later enters the area or ceases holding its breath must attempt a save against the effect. On subsequent rounds, the first time each round you Sustain the spell, you can force each creature in the area to save against the effect.
Success The creature begins holding its breath.
Failure The creature wheezes and gasps as its breath is stolen, becoming Stunned 1. The creature then begins holding its breath but has only half its normal number of rounds of remaining air.
Critical Failure The creature has all the air sucked out from its lungs and immediately starts to suffocate.
Traits
Effects with the air trait either manipulate or conjure air. Those that manipulate air have no effect in a vacuum or an area without air. Creatures with this trait consist primarily of air or have a connection to magical air.
An action with this trait requires a degree of mental concentration and discipline.
An ability with this trait can take a character completely out of the fight or even kill them, and it's harder to use on a more powerful character. If a spell has the incapacitation trait, any creature of more than twice the spell's rank treats the result of their check to prevent being incapacitated by the spell as one degree of success better, or the result of any check the spellcaster made to incapacitate them as one degree of success worse. If any other effect has the incapacitation trait, a creature of higher level than the item, creature, or hazard generating the effect gains the same benefits.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.