The Hourglass of Time is found within the Bronze Dragonshrine of the End Time instance. It was stolen and placed here by Murozond, and groups must use its powers in order to defeat him.

Abilities

•   [Rewind Time]^ω ϖ—The sands of the hourglass turn back time, restoring all health, mana and ability cooldowns.

Players may use the Rewind Time ability up to five times during the encounter. In addition to restoring all energy pools, health, and cooldowns, it will also bring dead players back to life.

Patch changes

• Patch 4.3.0 (29-Nov-2011): Added. 
  

External links

• Wowhead
• Thottbot
• WoWDB