The Stockwood Scrolls
This hardened sun elven ranger is the sole-surviving member of the Gray Hands party that attempted to infiltrate the Well of Dragons and kill Severin, the leader of the Cult of the Dragon. In one of his last acts as Open Lord, Dagult Neverember had sent a party of eight of the Gray Hands to achieve this. However, the attempt failed when they encountered unforeseen magical defenses, and seven of the eight were subsequently killed. Although Cylanestriel escaped, she was layer captured by Neronvain the Green inside the Misty Forest, and kept beaten and bruised in the lair of the green dragon Chuth.
Cylanestriel was drowned when the Heroes of Skyreach flooded the dragon’s lair, although Glinda would later raise her from the death using the power of Eldath. She would be greatly thankful for this, but saddened by the deaths of the other elves. She informed the adventurers of her failed mission, and that she had overheard Chuth and Neronvain discussing assassinating the elven royal family. Later, she helped the companions hunt down and kill the green dragon, after which she returned to rejoin the other Gray Hands in Waterdeep.