El hijo de un legendario señor de la guerra ha erigido un establo con la esperanza de poner en práctica sus aptitudes para adiestrar caballos gracias al regreso de los señores de las bestias.
The quest can be found in Northern Everfall. The quickest way to get there is by teleporting to the Shadowmine Shrine and running north. Once there you will need to speak with the quest giver, Jochi Khan to begin the questline
Check out StudioLoot's Mounts in New World guide for a complete overview, or Baggins' How To Unlock Mounts video if you prefer that format.