The Gelkis Khan is dead, and now the Maraudine will fall! Kill the Maraudine Khan, Hratha!
To face him, blow the horn on the high bluff in the Valley of Spears. But to blow the horn, you need a mouthpiece. To get a mouthpiece, kill Maraudine centaur. Keep killing until you find a mouthpiece. Then blow the horn.
Do this and Maraudine centaur will come to the tower. Kill them until Khan Hratha appears. Hratha holds the piece of a key. Give this piece to me...
Khan Hratha is dead! Now the Magram are the strongest of the centaur! We will crush the others, and rule Desolace!
We will remember, you, <name>, and you will be spared our hooves when all others are trampled.