3rd level Abjuration
Classes: Sorcerer, Wizard
Domains: Traps
Components: V, S
Casting Time: Standard
Range: Touch
Target: One touched object weighing no more than 10 lb.
Duration: Permanent until discharged
Saving Throw: See text
Spell Resistance: Yes
Description: 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 DEX 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. The runes can also be disabled with a successful Traps check (against your DC).