Do you know about spells that seem to be events, like ones that cause Earthquake, Hurricane and exceptionally cold winter? I don't think there is any that can destroy your laboratory, though, and attack-causing rituals do not include barbarian invasion... So I think you were unlucky, but are also pestered by someone casting these spells.
About Lady of Fortune and possibe punishment, that sounds like a great idea! In fact, something among these lines would be wonderful addition to DomII or maybe III... Killing pretenders shouldn't be just lucky coinsidense, it should be something that you (might) get punished for! For Lady of Fortune, I can see the luck scale of atleast the province she died in being dropped down to Misfortune 3 (it would return normally), for Cyclops something akin to Odyssey's wanderings (units getting scattered all around as if they were fleeing from the province when they try to leave), killing human pretenders should do little if anything, maybe in relation to magics and/or stats... Making this the effect of titles instead of pretender forms would be rather interesting as well.
