Oralius' Whispering Crystal

• Oralius' Whispering Crystal
• Binds when picked up
• Unique
• Use: Increases all stats by 100 for 1 hour. Counts as both a Battle and Guardian elixir. (15 Min Cooldown)
• Requires Level 35
• "Faint movement can be seen within the crystal."

Source

This item is a quest reward from  [35-40D] Oralius' Adventure.

Speculation

This is possibly what causes Oralius' "insanity" and if so, then it being in possesion of the Adventurer might cause him to regain his sanity.

Patch changes

• Patch 6.1.0 (2015-02-24): Tooltip updated.
  
• Hotfix (2014-11-17): Now increases all stats by 100 (down from 200).
  

Tooltip remains unchanged.

• Patch 6.0.2 (2014-10-14): Added.
  

External links

• Wowhead
• WoWDB