Falinesti's Faithful Totem Elk

"At the Battle of Falinesti, several herds of Wood Elf totem elks vanished—some say to Khajiit scoundrels. Later, Falinesti Faithful regained them, gifting them to devout riders. What constitutes a devout rider? Ask them."—Flaccus Terentius.

Source: in-game description.