Many World of Warcraft secrets and lore are available here. This questline will get your character even in vanilla close to or the very lvl 70 itself.
Some nice vanilla weapons are rewarded at the end of questchain and soon this questchain will be needed to complete custom Origins Questlines for each base class which reward many upgradeable shirts, spells and weapons.
Notice: You need to reach Blackwing Lair in order to do this Questchain as one of the early quests needs a head from 3rd boss in BWL
Here is a Blizzlike guide which will help you finish this epic questchain properly and go through with it quest by quest:
https://wowwiki.fandom.com/wiki/The_Scepter_of_the_Shifting_Sands_quest_chain
Remember to carefully Read Quest descriptions in game, as customized teleports and info are there.
Example:
The questline seemingly ends at Anachronos with the quest "Charge of the Dragonflights" , but this is not the case. Anachronos wants you to locate the 3 dragon shards located somewhere in Azeroth, specifically the [Green] , [Red] and [Blue] shards.
First comes the Green Scepter Shard:
Just go directly to Shade of Eranikus in Temple of Atal'Hakkar and Malfurion is there to take the next quest
It is possible to skip this entire Questchain by purchasing "The Scepter of the Shifting Sands" in item shop then go straight to Gates of Ahn'Qiraj and "Bang a Gong!" after this just choose some weapon from Jonathan the Revelator and thus finishing the last quest:
"Treasure of the Timeless One"
You are now ready for the Origin Questlines after completing this quest!
Example of one of the weapons you can choose from "Treasure of the Timeless One" - RavenCrest's Legacy a one handed iLvL 99 Sword with stats +33 and +44
