The mysterious third felcycle mount has finally been revealed, and it's coming in patch 11.1.5 of World of Warcraft: The War Within.
Here's how to obtain the Voidfire Deathcycle in World of Warcraft: The War Within:

The Voidfire Deathcycle
Back in November 2024, three different fecycle mounts were datamined from The War Within, the first being the Hateforged Blazecycle obtained from a Mountain Dew promotion and the second being Incognitro, the Indecipherable Felcycle obtained from the 20th anniversary questline.
The third mysterious purple felcycle mount has finally been revealed, and it's coming in patch 11.1.5! The Voidfire Deathcycle will be obtained during the Horrific Visions Revisited event in Patch 11.1.5.
"The prized possession of Haymar the devout. Unclear if he would be anything if not for his epic void bike. Formerly assigned to patrolling the streets of Stormwind after its fall."

Horrific Visions Revisited
Blizzard is bringing back Horrific Visions for the .5 patch of The War Within. Players can return to corrupted versions of Stormwind and Orgrimmar to complete different objectives and take on challenges to get Displaced Corrupted Mementos.
Displaced Corrupted Mementos are a new currency that will be used during Horrific Visions Revisited to buy mounts, toys, transmogs, and more - including the Voidfire Deathcycle.
Players of all experience levels will be able to complete Horrific Visions Revisited for the Voidfire Deathcycle mount. Players that don't have a group to run these scenarios with will be able to bring a Construct of Soridormi companion with them, and can change this companion to be either a Tank, DPS, or Healer.
Players looking for a bigger challenge will be able to run Horrific Visions on higher difficulties and earn Heroic track gear as a reward.
The Horrific Visions Masks are also returning. The Mask of Pain, Mask of Dark Imagination, Mask of the Long Night, Mask of the Burned Bridge, and Mask of the Daredevil and returning as well as 3 entirely new masks for players to collect!
Besides the Voidfire Deathcycle, there are plenty of other mounts to farm during Horrific Visions Revisited.
The Corruption of the Aspects is a new mount that will cost a whopping 100,000 Displaced Corrupted Mementos:

The Void-Scarred Gryphon, Void-Scarred Pack Mother, Void-Forged Stallion, and Void-Scarred Windrider are 4 new void mounts that can be obtained during Horrific Visions revisited.

It's currently unclear how exactly the Voidfire Deathcycle will be obtained during Horrific Visions - whether it will be purchased with Displaced Corrupted Mementos, from an achievement, a quest line, or a rare drop. The only thing we know for sure is that the third felcycle mount is releasing in Patch 11.1.5 and will be obtained by completing Horrific Visions Revisited.
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