Werewolf character?

You'd be better off using the Imp status. Morph status is weird and glitches up when you play around with it too much.

Changing the status a relic (or any piece of equipment) grants at low HP requires hex-editing another effect out (like SOS Shell).

I'm also not sure where the SOS status routine is stored in the ROM, so I can't help you any more than that. You should ask on Pandora's Box.