I think I may be dreaming here, but, here goes...
I'm a 17th level/Mythic 8 mythic vampire cleric, and I'm thinking one or more of my parties members may try and kill me this weekend. It's an evil campaign by the way.
Anyway, what I'm trying to come up with is a way to "ready" an action that will take place if I get attacked. What I want to do is cast a spell if attacked by a party member. This could come at the start of this week's session, or, an hour into it...I have no idea. So, my concern is that if I pass my DM a note that says I want to ready an action, blah blah, he's going to rule against me because a readied action only last one round.
Is there anything else I can do, other than approach the DM and say "Hey, if I get attacked by a party member, I'd like to let loose a prepared spell, or, at worse case, I'd like to poof into gaseous form."
Not that it matters, but the spell I want to prepare is the 9th level energy drain, mythic, and maximized (I have mythic maximize) so it's a ranged touch attack (it'll definitely hit) that does 2d6 negative levels, so that's 12, plus, because it is a ranged attack, Energy Drain (separate ability for vampire melee or ranged attacks) will add another 2 levels, so that'll be 14 negative levels.
The person I'm concerned about is a 16th level sorcerer. If this happens (her attacking me), I'm going to pause the game by raising my fist over my head (our signal for OOC interaction) and ask her to please reconsider her actions, that, its' going to end badly for her if she doesn't.
I digress. Is there anything that anyone can think of that will definitely allow me to prepare this spell and have it waiting, like a rattlesnake card in Magic: The Gathering...?
