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For that question, the simplest answer is also the best: No.
XD except no one would ever use it. It costs an ec to use, and they don't lose much to negate it. And they have a limit so ya can't spam it.
"Once per turn, you may Place your Evil Character (I'd rather it be Demon) on a Hero in territory. While it remains, Negate the Special Ability of all Heroes of selected Hero's Brigade and all Fortresses that could hold Hero. Owner may Discard a Hero or Covenant matching that Hero's Brigade to Discard placed Evil Character."Still clunky, but a bit better.