Terror of the Wastes

It's not world-devouringly bad, just misunderstood.

Riding Requirements:

This mount is available to all eligible characters on your account.
Level 10
Apprentice Riding (ground)
Expert Riding (flying)

Source:

Om'sirik in Tazavesh, the Veiled Market, K'aresh. Requires Renown Rank 19 with The K'aresh Trust.
Cost: 11375 (reputation discounts apply for some factions)

Notes:

This red void swarmer can be purchased upon reaching renown rank 19 with The K'aresh Trust. Renown with this faction may be earned through a range of different activities in K'aresh; see Wowhead's K'aresh Trust Renown Guide for more information.

Introduced in:

Patch 11.2

Travel Mode:

Ground (+60% or +100% speed)
Flying (+150%, +280% or +310% speed)

Speed depends on your riding skill.

Other Mounts Using the Same Model:

Terror of the Night

Blizzard ID:

2510

More info on Wowhead:

Terror of the Wastes taught by Terror of the Wastes