Cheers guys, I'll make sure those are added to the guide. It seems I've missed a lot of reduce healers, so thank you for spotting that.
Demon Spawn isn't working for me either, and I've seen someone mention it on the subreddit too. I think it's broken. Hopefully it's fixed soon!
As for my thoughts on the event, it's certainly a weird one. I only had around 30 souls and no Count, so I thought I'd open them up and see if I could have a shot. No Count, but did get another Doomsday. I'll certainly give it a go, even if I end up just keeping the rewards and forget the rest of the event. Seems weird to have this event before a sacrifice though..