Originally posted by Smurph
It's not about causing pain. It shuts down minds, like a mindblast, in knife form. Since it's worked on other beings with non-human minds, like Cassandra Nova (alt universe) and Arkea, I don't see it failing against Gorgon, especially since he has telepathy.... and in comics, you don't usually get to simultaneously use telepathy and be immune to it.
Her knives also failed plenty of times, so it's not a surefire tactic.