It's just a thought I had. Jormag always lies and manipulates people. Jormag said they and Primordus are twin dragons. Baladazar had lyssa's mirror and was kind of crazed with vengeance over killing the dragons. What if what he meant when he said "they've dimmed my light" he was being metaphorical meaning they killed the person he loved Lyssa?
Also in siren's landing I can't help but feel like Jormag is very similar in the IBS to the new scripture of lyssa we got in season 3 right before PoF.
A Parable of Lyssa
From out of the darkness, there stepped a child into the campfire's light. And she said, "I am Lyssa, and I have come to teach you what is illusion and what is truth."
But the soldiers there did not believe her. They laughed and said, "If you're Lyssa, then show us your beauty, for we can surely use it on this dark night. We have lost hope that this war will end."
The child approached, and her smile held divine grace. "Share your food with me, and in return for your kindness, I will show you beauty the likes of you will never see again."
And so the kind soldiers did, and the child ate with ravenous hunger. When the last bone had been tossed aside, and the last bean swallowed, the child began to skip around the outside of the campfire. She touched each man on his head, one at a time, as they laughed and jibed her until, one at a time, they fell into a deep slumber. Each man dreamed a different dream, but each dream was a vision of the life they would lead once the war was over—wives, children, riches, open air, health, and peace.
And when they awoke upon the morrow, the child was gone and the enemy had arrived. They fought joyfully, with all their might, because they all remembered their dreams and knew they would win the war. Each man put his heart and soul into the battle, and each man, one at a time, was slaughtered._