Mafia 92. Void Lord.

I probably didn't quite understand you: are you suggesting banning blocking, defending, healing, killing, etc., a single target for the entire game? Or is this only for healing, which also isn't the most brilliant idea?

well, generally speaking, you can't use the same negative effect (ND) on the same target twice in a row; alternate negative effects or alternate targets – go ahead.
and healing yourself every night is just a cheat, and a useless one at that.

Added 17 minutes later
does anyone on an external forum (similar to Hv) want to play a Might and Magic: Heroes set?
https://docs.google.com/document/d/1Gi27y0oUTfCfCkkf46w0Rlq0N2jg6dDEdl1U9QJcs8Y/edit
if you're interested, and if Kane does come up with something, I can share it.