Spell Cast Dependant Status?

Okay! So, say I wanted to ALWAYS have Terra start battles Silenced, and that Silence was Uncurable until she cast Osmose on someone (Ally or Enemy).
Or she Always started Uncurably Poisoned until she successfully cast Zombie on someone.

... Is that even Possible? Of course, I want to do Neither of those things, but that's exactly the TYPE of thing I'd like to do.

Battle Start - Poison on Terra - Terra Casts Poison - Enemy is Hit and Poisoned - Terra is Cured.


It's important to me that it not be Antidotable by any other means. Should I seek out a New Idea, or pursue this one?