Explosive Runes

Abjuration [force]
Tier: 3
Components: Verbal, Somatic
Casting Time: 1 round
Range: Touch
Target: One touched object weighing no more than 10 lb.
Duration: Permanent until discharged (D)
Saving Throw: See text
You find the boy’s body in the morning, the black book still open to the first page. Curiosity is an asset in an apprentice, of course, but only when tempered by caution.

You trace these mystic runes upon a book, map, scroll, or similar object bearing written information. The runes detonate when read, dealing 6d6 points of force damage. Anyone next to the runes (close enough to read them) takes the full damage with no saving throw; any other creature within 10 feet of the runes is entitled to a Reflex save for half damage. The object on which the runes were written also takes full damage (no saving throw).

You and any characters you specifically instruct can read the protected writing without triggering the runes. Likewise, you can remove the runes whenever desired. Another creature can remove them with a successful dispel magic or erase spell, but attempting to dispel or erase the runes and failing to do so triggers the explosion.