Since the paper is folded, a GM might reasonably rule that the rune is not visible to be read....
That is such a cool idea but I must draw your attention to the sentence in the rules you quoted which read, "The explosive runes detonate when read."
Very few people are going to try to read an incoming origami swarm. They are going to set it on fire, which unfortunately will not detonate it.
I am probably wrong but somewhere I read you can choose too fail any roll...so wizard dispels the rune(s) (and they are all the same rune.since duplicated.) and opts too fail his own dispel...That is such a cool idea but I must draw your attention to the sentence in the rules you quoted which read, "The explosive runes detonate when read."
Very few people are going to try to read an incoming origami swarm. They are going to set it on fire, which unfortunately will not detonate it.
edited cause I misunderstood what you were trying to do.
I would rule that PCs don't get to choose that their magic items fail their saves.
I also don't believe you can intentionally fail checks but I could be wrong.
There's a thread about a GM pulling this stunt here:
http://paizo.com/threads/rzs2of6n?GMengineered-TPK-How-would-you-feel
further eta: RAW, it wouldn't work. As brought up in that thread, dispel magic automatically succeeds against spells you cast yourself.
just occured too me a mage inscribes a marble with the rune fills bag..then nearing death drops bag contingency teleport home..and dispel...would be broken as well...damn thought I saw a usefull bug...pun intended...thanks man.I wouldn't be making this in the field...Id be making during down time, it would only be 150 gp, the item says it won't attack its own creator...(the person folding it) not dispelling the magic that animates it..but the rune it bears....
IF the schmuck decides to read your notes instead of focusing on you as a threat schmuck won't know I am there...either invisible..and didn't directly attack...or perched in a way above the action ie murder hole...whatever..
invisible activate...let the swarm drop into space observe..hold action dispel when I see fire...and then do so.
A contingent dispel combination might work. However, the spell says that in convoluted conditions the spell combination may fail.
First, that means the teleport doesn't acutally happen and your near death becomes a bit nearer than you'd like.
Second, and more importantly, if I was your GM, and you tried something as cheesy as this, no matter what your conditions were, I'd have them succeed in a way that bites you in the butt.
I can't see a way to pull this off that's rules legal.
further eta: RAW, it wouldn't work. As brought up in that thread, dispel magic automatically succeeds against spells you cast yourself.Most adventurers are in parties with at least two casters or one caster and a UMD monkey. The other caster doesn't auto-succeed to dispel his friend's explosive runes and can choose to fail. Or the rogue can be handed a dispel magic wand and just fail naturally because the caster level is so low.
The rouge's wand has a chance at working, but I can't find where you can fail checks, just saves.