Or for really strange try - The Green hag decides to fight to death in a blind rage the green hag hits herself the green hag is killed the green hag suddenly looks more powerful... I Do not recall this one ever happening before.

I lost another character a bard who charmed a kharmic lizard as it went similarly berserk The message: The Kharmic dragon suddenly looks at itself in a very strange manner and it suddenly killed the game. Note it saved the character but the save always broke as soon as you started it up.