Glyph of Warding
From HGWiki
Caster Level: Cleric 3
Innate Level: 3
School: Abjuration
Descriptor(s): Sonic
Component(s): Verbal, Somatic
Range: Short (8 metres)
Save: Reflex 1/2
Spell Resistance: Yes
Area of Effect/Target: Large (5 metre radius)
Duration: 1 Turn / level
Description: The caster creates a small, magical zone that can detect the passage of enemy creatures. When the field is activated, it explodes, doing (CL / 2)d6 Sonic damage, boosted by Lore, with no cap to all creatures within the area of effect. If the glyph remains set for at least one round, it receives +(Abjuration foci * 3) SP. After being triggered, the glyph dissipates.