Tel'kor

Tel'kor was a young high elf ranger who served under Sylvanas Windrunner's command during the Third War. He was sent to the Sunwell Plateau, to tell the magi what they saw at the first struggle with the Scourge and to be prepared.

Speculation

 * He may be a nod to the Warcraft III side quest where Sylvanas would send a runner to Silvermoon to warn them about the approaching Scourge.
 * As the Convocation didn't learn about Dar'Khan's betrayal, Tel'kor may have never reached Quel'Danas.