Sleep

This spell puts several creatures of 3 or fewer hit dice, or a single 4 hit die creature, into a magical slumber. Creatures of 5 or more hit dice are not affected. The caster chooses a point of origin for the spell (within the given range, of course), and those creatures within 30' of the chosen point may be affected. Each creature in the area of effect is allowed a save vs. Spells to resist. Victims of this spell can always be hit if attacked. Injuring such a creature will cause it to awaken, and it may begin fighting back or defending itself on the very next round. Slapping or shaking such a creature will awaken it in 1d4 rounds, but normal noises will not. Sleep does not affect unconscious creatures, constructs, or undead creatures. When the duration elapses, the sleeping creatures normally wake up immediately; however, if they are made very comfortable and the surroundings are quiet, the affected creatures may continue sleeping normally at the GM's option.