Mystique spoke up, not without sympathy. "Just scored your first kill, huh? I remember the feeling. You'll get over it."
He looked up, stunned by her words. Magneto, noticing this, gestured to Mystique to leave them, and sat down next to John.
"Mystique is right. That's the secret to surviving as a mutant - learning to kill without qualms when necessary. And one day it may be you or your old friends. Think hard about that and make your choice. Stay or go, we won't prevent you."