Hey, thanks for reaching out and reporting this issue, I really appreciate it!
There's no issue with the request, as I was already working on a couple mod updates along the way.
I went ahead and looked at the Invincibility Mod for possible issues and found a couple of stuff:
- The heroin state was being marked as a "state immunity". This is a blunder on my part since I haven't looked too deeply at Termina's states when designing the mod.
- The real issue here(which also explains why neither buffs/debuffs were being applied),
is that there was an issue with how the mod was handling the death state exception.
After changing how the mod handled immunities and death exceptions, the issue seems resolved on my side.
You can go ahead and update the mod to its latest version!