Um, it is a no-brainer that this spell does not work as written for a good portion of the conditions.
I've read one thread and no official answer was given. Way to go on bad editing and even further failure to follow up Paizo-dudes. Tis fun to do world building, but mechanics count as well ;) :)
I figure the spell should be an Immediate Action.
My DM is a curmudgeon for "official" answers.
I've already house ruled this to an immediate action, but I deplore fixing books my players have bought.
Necro-ing to express my displeasure about this too. It has been over 5 years now and apparently no Paizo people have seen the 4 other threads about this same thing, or they choose not to address it. This spell should probably be an immediate action or even a swift action with no components.