How do you use the hourglass on Murozond on World of Warcraft?

Answer 1

When you click on the hourglass, it will reset you and your entire parties health, mana, cooldowns, and positions to a previous time. Think of it as a do-over button. You will probably want a ranged dps or healer to control the button. When the healer is just about out of mana, or things are starting to get out of hand, click the hourglass and you are instantly reset. This will even reset the cooldown on the longer CDs like Heroism, Time Warp, etc.

There are only a limited number of uses on the hourglass so use them carefully and avoid double clicking the hourglass.