You have done well in tending to the sickly deer of Darkshore; they are unwitting victims of a greater taint and corruption that is spreading all throughout the land.  There are those in Darnassus who choose to recognize this threat... and there are those who ignore the growing signs.  I hope you will not be one to put blinders on about what facts stare you in the face, $N.$B$BRegardless, you've proven your worth as a friend of nature and the Circle - take this as a symbol of such.