This spell causes the creature touched to remain awake and alert for the spell's duration (determined by the caster's level). Even an exhausted creature won't doze or fall asleep, and all of its senses perform at peak ability (tired eyes keep focus and so on). A creature under the effects of an alert vigil is not “resting” (healing), but the magic does not make the recipient wearier when it expires.
Notes: Granted by the war god Torm in the Forgotten Realms setting. This spell is found only in a few exceptionally rare tomes.