by EverywhereGames
custom Cleric card ... innate skill be some form of turn undead ability.
Dunno how balanced this would be but could you try something like and At-Will that stuns one undead monster/villain until its next activation phase? So a normal undead would be stunned long enough for everyone else to kill it but a Villain just wouldn't attack on the cleric's turn. No damage would be done to it but it wouldn't be hurting the party either.