From WoWWiki

Source

This item is a rare drop from Headless Horseman. The horseman is found in the graveyard wing of Scarlet Monastery during the Hallow's End seasonal event.

External links

Neutral Mounts
Class Based	Death Knight: Deathcharger Paladin: Warhorse • Charger Warlock: Felsteed • Dreadsteed
Pre-Burning Crusade Drop Mounts	[Deathcharger's Reins] • [Swift Zulian Tiger] • [Swift Razzashi Raptor] •
Burning Crusade Drop Mounts	[Ashes of Al'ar] • [Fiery Warhorse's Reins] • [Reins of the Raven Lord] • [Amani War Bear] • [Swift White Hawkstrider] •
Faction Mounts	Riding Talbuk • War Talbuk • [Cenarion War Hippogryph] • Nether ray • Netherwing drake mounts
Crafted Mounts	[Flying Machine Control] • [Turbo-Charged Flying Machine Control]
Holiday Mounts	[Fresh Holly] • [Preserved Holly] • [Brewfest Ram] • [Swift Brewfest Ram] • [Magic Broom] • [Swift Magic Broom] • [Flying Broom] • [Swift Flying Broom] • [Rickety Magic Broom]
TCG Mounts	[Riding Turtle] • [Reins of the Spectral Tiger] • [Reins of the Swift Spectral Tiger] • [X-51 Nether-Rocket] • [X-51 Nether-Rocket X-TREME]
Other Mounts	Qiraji battle tank mounts • [Black Qiraji Battle Tank] • [Dark War Talbuk] • [Dark Riding Talbuk]