Damn symantics, and I used to be really good with such things.
How about this: 1 Board 2 Clues, 2 or more Boards 3 Clues for the fight with the Mask at the Beginning?
I think 2 clues is good. I love the doubts "2 clues and fight with Mask monster" and "remove a monstrer, but raise Terror"
I translate this Heralds to Spain. I hope you do not bother
Heh... Look at the previous discussion on game balance to see why one might want three clues for a beginning mask fight. Otherwise it's disincentivized too much when you add in the ones that devour or will just knock unconscious and start running around the board screwing up other players.