What the god of dreams said made the first angel laugh bitterly. As he laughed, he wanted to cry too.
If he still had his tear glands he would have cried and he would have cried a lot because what was going on was too painful for him to put in words.
At the end of the day, he said, "Let me guess. You want to possess me, and you want to keep my mind intact while doing so."
The god of dreams didn't deny it. He said, "I need an angel of telepathy, seeing as things escalated far too quickly. You should be honored that I need you. At least this way, you will be able to foil that young upstart."
He had been willing to give his life to stop Legion before. But that was death and he was willing to die.
He thought he was willing to do anything to stop Legion. But at this point, he realized that there were some things that he would rather die than do. Being possessed or enslaved is one of those things that he would choose death over.
