Dawn

All sleeping creatures in the area awaken.

(Masters of the Wild: A Guidebook to Barbarians, Druids, and Rangers)

Originally posted on D&D tools

Abjuration
Level: Druid 0, Ranger 1,
Components: V,
Casting Time: 1 action
Range: Personal
Target: All creatures within a 15-ft.-radius burst centered on you
Duration: Instantaneous
Saving Throw: Fortitude negates (harmless)
Spell Resistance: Yes

Those who are unconscious because of subdual damage wake up and become staggered (see Subdual Damage in Chapter 8 of the Player’s Handbook).

This spell does not affect dying creatures.