Another odd one. Found dracul again at level 1. I took no boons. I had 1/1 health upon exiting. I immediately bought a troll heart. I had 3/3 health and was level 2. I had not taken blood curse. Something hinky happened. I will attempt to reproduce the situation but it will be hard. I can also purchase blood curse again. Maybe some of this is behavior I don't understand but it certainly was all unexpected. I have a SS I will attempt to get posted.
Edit: Ok there really is something I don't understand going on. I by some luck got resources to kill something(really hard when you have 3 health at level 1(2)) I reach level 3 and now my HP is 16, as if I was level 2 with 3 stacks from troll heart. Definitely something hinky. Again have the follow up shot. Will attempt to post.
Edit 2: Happened again. Level 2 Monk with Pendant of Health, have 20 HP. Find Dracul sub dungeon, kill clone. Exit without worshipping, gain 20 piety but now only have 10 HP. Only level 2 still. Leave up, I shoot back up to 20 health as if I was level 2 with a pendant of health.