The spectral dragon let out a sigh. Kos didn't know how this was accomplished. "I understand that my warnings have fallen on deaf ears with you, dracon. It happens almost every time. Very well, mortals." 

He looked at Lilith. "You, female, you may be spared if you keep true to your word. Be warned, though: if you help any of the others, you will be treated as an intruder and slaughtered as one." With that, the spirit faded away, turning more and more transparent until it finally disappeared. Kos took a few swings with his sword, slicing through the air where the ghost had once been. "It's gone. Either that, or it simply turned invisible and intangible. Be on the lookout. If we accomplish much here, it may come again."