Does this have to be revealed to your opponent at the beginning of the game, or can you write it down on paper?
As far as i know (and im by no means a veteran) you declare who it is at the start of the match. This would represent the user picking up the head saying the curse (in a deep and booming voice) and pointing at the target. rules wise it keeps things fair and stops the stunty moaning when the blood starts dripping down his beard