Glyph of Warding

• Caster Level(s): Cleric 3
• Innate Level: 3
• School: Abjuration
• Descriptor(s): Sonic
• Component(s): Verbal, Somatic
• Range: Short
• Area of Effect / Target: Large
• Duration: 1 Turn / 2 Level
• Additional Counter Spells:
• Save: Reflex 1/2
• Spell Resistance: Yes
  
  The caster creates a small, magical zone that can detect the passage of enemy creatures. When the field is activated, it explodes, doing 1d8 points of sonic damage per 2 caster levels to all creatures within the area of effect up to caster level 10 and then an additional 1d8 points of sonic damage per 4 caster levels thereafter. After being triggered, the glyph dissipates.