Explosive runes is one of my favorite utility spells and I want to make sure my reasoning behind usage is right. Hopefully it is but if not I'd like people's opinion on my interpretation of the rules.
The way I read it Explosive Runes can be triggered the following ways
* reading the runes
* failing to beat the caster level to dispel them
* failing to disable to device the runes by 5 or more (DC 28), non trained users auto fail correct?
So would attempting to burn the paper the rune is on count as a failed disable device check? If so we now have cheap fuses for Explosive Rune bombs.