Explosive runes

Explosive runes is an abjuration spell that booby-traps runes to explode in their readers' faces.

Effect
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 damage. Anyone next to the runes (close enough to read them) takes this damage with no saving throw. Others within 10 feet of the runes take half damage if they succeed at Reflex saving throws. The object in which the runes were written also takes the damage (no saving throw).

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

Note: Magic traps such as explosive runes are hard to detect and disable. A rogue (only) can use the Search skill to find the runes and Disable Device to thwart them. The DC in each case is 25 + spell level, or 28 for explosive runes.