I haven't cast Gorgon's Gaze, yet. I could see it being strong against some minions. Gorgon's Miasma is just amazing. GM + Bellow = an effective WP 15 morale duel. Nothing to sneeze at. My typical manifestations thus far have been setting it up for a 1 action in the middle of a few models, manifesting, Miasma, then Bellow, then increasing my terrifying to 15. I'm curious if using Succumb to Darkness makes opposing models take another Terrifying test. I assume not since it's not a new instance of Terrifying, but I could have missed something.