"As to Lythis, I believe Drezlin may have
created her. Or, perhaps Cyric did and left her to Drezlin to be cared
for. In either case, I believe she is made entirely of shadow but
possesses the powers and skills of regular dragons. If that is true, it
makes her an exceptionally deadly foe. Unfortunately, no one with any
significant knowledge of dragons has been in her presence and lived to
tell the tale. We fought her as a young dragon. It would be very helpful
to know how her powers have evolved. If she truly destroyed Red Larch
alone, then she has grown very powerful indeed. In either case, I
suspect she is working on behalf of Cyric but is likely under Drezlin's
control." - Elminster
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A Shadow dragon created by either the Lich, or Cyric, and under the control of Drezlin Nandar. While attacking the Feywild with a swarm of over three hundred of her young copies, Lythis and all were struck down by lightning as a result of Dhann's entreating for a Divine Intervention from Helm.