Serenity managed to do a World First Mythic+ 20 Darkheart Thicket Keystone clear within the time limit and their key got upgraded to M+ 21 Eye of Azshara. The run was done using a depleted key.
The run was tanked by Lazel and healed by Gamko. DPS were Fragnance, Deepshades, Gingi. Congratulations!