Riddler's Mind-Worm

It feeds on your thoughts, even the ones you are thinking as you read this.

Riding Requirements:

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

Notes:

As its name suggests, this mount was hidden behind an obscure riddle! The participants of the WoW Secret Finding Discord channel solved the riddle and got their Mind-Worms on 11 April 2017. Essentially the method for solving involves clicking on pages from a book that are scattered around Azeroth (and the Firelands). The solution is far too complicated to document here, but you can find all the steps in Warcraft Secrets' guide. Check out the WoW Secret Finding Discord for other mysteries they're working on.