Ancalagon immediately froze, his black scales helping him blend in with the shadows that were around him, and simply stared at the serpent creature that swam toward the ruins. He knew of several dragons and similar creatures that might look like that, and was trying to spot the identifying features that would help him identify it. He made sure to not move until he had some idea on what it would do when it noticed his presence.<br/><br/><em>Knowledge (arcana) = 41 on 25+d20</em>