Symbol of Sleep

Type ritualSchool enchantment (complusion) [mind-affecting]

Casting
Casting Time 30 minutesComponents V, S, M (mercury and phosphorus, plus powdered diamond and opal)

Effect
Range ritualEffect 60-ft. area rune within 100-ft. of ritual nodeDuration permanentSaving Throw will negates; Spell Resistance no

Description
When this ritual node is created, you scribe a powerful rune within 100-ft. of it. When you scribe the rune, you specify a trigger of any complexity that can affect creatures within 60-ft. of the rune. Until the rune is triggered, it is considered inactive. Once the rune is triggered, it lasts for [20/30/40/50/60] minutes and then disappears for the rest of the day. It resets the next day. Each day, you may change the rune's position and/or triggers

When triggered, creatures in the area fall into a catatonic slumber for [1/2/3/4/5] hours. Unlike with the sleep spell, sleeping creatures cannot be awakened by non-magical means before this time expires. This spell is purely for stalling intruders. When any danger to the sleeping creatures approaches, they wake up.

Read magic allows you to identify a symbol with a Spellcraft check (DC 15). Of course, if the symbol is set to be triggered by reading it, this will trigger the symbol.

A symbol of sleep can be removed by a successful dispel magic targeted solely on the rune. An erase spell has no effect on a symbol of sleep. Destruction of the surface where a symbol of sleep is inscribed destroys the symbol but also triggers it.