Just so people know - you can check your mythic chest without taking the essences. I tested it out on an alt who had less than 36 so I didn't waste any this week; Most people play with auto-loot on, so you'd automatically take them and waste them, but if you hold shift when looting, you "manual-loot" instead - meaning you can click whatever items you want from the box, and leave the rest. Did it on my Dk (which had 46) afterwards, essences ends up being mailed to you and you can collect them at your leisure after you pick up the new quest
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