The Horseman's Reins

The subject of this article or section is part of Hallow's End, a seasonal event that lasts two weeks. Once the event has run its course, this will no longer be available until next year, but there are no guarantees.

The Horseman's Reins teaches you to summon the Headless Horseman's Mount, which serves both as a flying mount and a ground mount.

The saddle is buried in the cemetery of the Scarlet Monastery.^[1]

Source

Headless Horseman's Mount

This rare mount can be looted from [Loot-Filled Pumpkin] which is awarded once per day to level 70 or higher characters who use the Dungeon Finder to form a group to kill the Headless Horseman during the Hallow's End seasonal event. Characters from levels 1-69 will instead receive the [Loot-Stuffed Pumpkin], which will not contain the mount.

Mount Journal

Be it into the flood, or into the fire, this one will go where you require.

Achievement

Obtaining these reins will reward the Feat of Strength [The Horseman's Reins].

Notes and trivia

As of patch 3.0.2, this mount was usable in combat, although it must have been channeled without interruption like any other mount.^{[citation needed]}
Prior to patch 4.0.1, it was not possible to mount flying mounts while swimming. Because the Headless Horseman's Mount functions as a ground mount in the water, unlike regular flying mounts, it was possible to mount in the water prior to 4.0.1 then take off by jumping out of the water.
It was the first flying horse mount in the game.

Patch changes

Patch 3.3.3 (2010-03-23): No longer drops from The Headless Horseman. Instead, you can get this mount from [Loot-Filled Pumpkin].
Patch 2.3.0 (2007-11-13): Added.