Curufin can see that. The scratch marks are red and inflamed.

He feels a thrill of dread when Maglor names Sauron. It is as though Celebrimbor's fate were to befall his uncle too! And maybe all of them, all the surviving Elves of Middle-earth?

"It's a hallucination. The gods Fear, Sorrow, and Confusion are dining off our bad dreams. I hope they choke on this one."