So your card idea is to in order to discard a O.T male hero in play, you must discard the evil character you play this enhancement on.
That idea is too weak to be play by anyone, first of all, no one would sacrifice their evil character just to kill one o.t male character, maybe it said cannot be negated if use by a philistine, and/or Greek, and/or Sadducee, other wise it is a card that no one use, although have a good idea, I suggest you make a card, the effect related to the bible, don't think of a effect just because it could improve your deck, you have to think about all other deck as well. The best way is to look through the bible, and look at a verse and determine their ability through the verse. Thank you.
ML.