You'll then turn in Reader for the Dead Tongue to a trainer in Stormwind or Orgrimmar

You'll then turn in Reader for the Dead Tongue to a trainer in Stormwind or Orgrimmar.
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 A Tale of Six Masters/ A Tale of Six Masters: Rage of Bahamut RageMedals  Read a book near warlock trainers in Stormwind and Orgrimmar that explains the recent events of the Council of the Black Harvest. We've copied the text in this book later in the blog. As a reward, Rage of Bahamut RageMedals  you get a permanent copy of the letter: Legacy of the Masters (Part 1).
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 Seeking the Soulstones: Read Jubeka's Journal and use the clues within to locate the four soulstone fragments. Clicking on these soulstones gives you greater insights into Jubeka's memories. The Hobbit: Kingdoms of Middle-earth Mithril  (These memories have also been transcribed below in the lore section).◦
 Hellfire Fragment: The Legion Front
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 Netherstorm Fragment: Ruins of Fahralon
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 Blade's Edge Fragment:  The Hobbit: Kingdoms of Middle-earth Mithril eastern-most point, by the bridge to Netherstorm

It was destroyed by the Legion

The quest series begins by looting Sealed Tome of the Lost Legion, currently from a Green Test Infernal Kingdoms Of Camelot Gems  by the Shado-Pan Garrison in Townlong Steppes. (Ghostcrawler has stated that it will be rare to get on live, but not super-rare.) Fuse together Sealed Tome of the Lost Legion with Healthstone to get An Unusual Tome.
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Speak to your demonic minions to Cheap Kingdoms Of Camelot Gems  learn more about the codex. Your Voidwalker and Felhound are the chattiest:◦
Voidwalker: I cannot read the words…but the magic points to a world that exists no longer. It was destroyed by the Legion.
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Observer: Of course! This codex is written in the ancient nathrezim tongue. Nthrezim, or the Dreadlords,  Cheap Fast & Furious 6: The Game Gold  as you call them, were once an enlightened and powerful race. Their skill in summoning and gateway magics was unsurpassed by any in the Great Dark Beyond. This particular tome contains instructions to open a gateway to another world. Sadly, I fear that world no longer exists. It was destroyed as a show of power during the enslavement of Xoroth. Buy Fast & Furious 6: The Game Gold   That tone is useless, I'm afraid. No human warlock could open such a gateway alone.