I have a character with three blights and i added "seems worried about something" to the description and now i'm wondering if there is a max or there is a point where the chance of being resurrected just stops getting lower and has a max or it can reach 0%

I think the chance to receive one without dying decreases so much that it's effectively 0% after a few of them. I saw someone talking about receiving 4 once, but that's the max I've ever seen. Would need more testing to be sure though, or a response from Brian himself.