Reins of the Traveler's Tundra Mammoth (Alliance)

This mount comes with two vendors: and. You can dismiss one or both of them to free up a spot for a friend in your party or raid. The buttons used to dismiss the vendors can also be used to force player passengers off the mount. When the vendors are dismissed, they will not return until the mount is dismissed and resummoned again.

Source
This item can be purchased for from the exotic mount vendor Mei Francis in Dalaran. As Mei Francis is a member of the Kirin Tor, this mount is subject to faction discount, making it cost at.

Tips

 * This mount is like dropping a repair bot if the dungeon is outdoors or otherwise allows mounts to be summoned. Even for instances that do not allow mounting, repairing is often needed after repeated corpse runs, where players may be near an entrance anyways, and could simply gather around the mammoth just outside the instance portal before returning inside.
 * The vendors that come with the mount are not associated with any reputation faction. Thus, they charge full price for purchased items or repairs, and do not offer reputation-based discounts.