Kill Naphthal'ar and then return to Warden Treelos at the Cenarion Thicket in Terokkar Forest.
Quick, hide! The eyes of Naphthal'ar are upon you... upon us all!
I dare not go to the top of the tower to speak with it, but you... you look as if you might know the right words to say. Just be careful, it doesn't like jokes and will not suffer fools easily.
If you can, convince it to come down for tea. But, by all means, get it to stop staring at me!