Blizzard has added a motion sickness vendor to Blackrock Foundry and Dragon Soul in the Dragonflight pre-patch.

The NPC can be found on the ship selling an elixir (Motion Sick Peon’s Magical Elixir) which reduces background motion. The item is usable in Grimrail Depot, Maw of Souls, Blackrock Foundry, and Dragon Soul, so expect a similar NPC in Blackrock Foundry too. The Dragon Soul NPC was discovered by Reddit user Vedney.

Source: Reddit