[Trexmaster]

I believe the effect doesn't take place immediately, as Spirt Pain works at the top of the round, giving every enemy the status, so, it'd proc the round -after- you've cast it, from what I know.

To my knowledge the whole 50% chance thing is incorrect, after Spirt Pain doles out its status(es), it -will- proc if the victim has the real status (or is the only target).