- Silithyst dust surrounds and burdens you. You cannot carry it on your mount, and it impedes the use of any speed enhancements.
Silithyst is "strange red crystalline dust" that appears in the Silithus desert, which both the Horde and the Alliance would like to assemble in quantities as large as possible for researching purposes. Doing just that is the objective of the world PvP event "The Silithyst Must Flow" and the world quest , available during the Call of the Scarab micro-holiday.
Collecting Silithyst will result in a debuff that slows the character's speed considerably.
- Patch 7.1.5 (2017-01-10): Removed when Call of the Scarab micro-holiday was turned off (bug).
- Patch 1.12.0 (2006-08-22): Added as part of The Silithyst Must Flow world PvP event.