Dawn of the Infinite

Dawn of the Infinite is an eight-boss megadungeon added in patch 10.1.5.

The Bronze Temple has lain dormant for millennia, awaiting a time when its dragonflight would return. But just as the bronze dragons have reclaimed their sacred temple, dark forces now threaten to overtake it. Will the infinites take hold of the Timeways and bring about the rise of Murozond? The champions of Azeroth must venture into time itself to ensure that the future remains a bright one.

A brief questline introduces players to the megadungeon, starting atop the Seat of the Aspects in Valdrakken, though it is not required to access the instance:

• Chronikar: Chronikar spent her entire life in service to the infinite dragonflight, making her way up the ranks until she earned the title of commander. Even among the radical infinites, her zealotry is unmatched. As the venerated rearguard, she will stop at nothing to put an end to any who dare oppose her order.
• Manifested Timeways: A manifestation of the sands of time itself. This ancient being is always watching, always waiting for the moment when the Timeways are in peril. She was unable to stop the infinite dragonflight as they crashed their way into the past. Now, faced with more intruders, she refuses to fail a second time.
• Blight of Galakrond: These primal dragons were brought back by the necrotic energies dripping from the corpse of Galakrond. Ahnzon is the crackling hunger of the storm. Dazhak the all-consuming gluttony of the flame. Loszkeleth the seeping starvation of the cold. And the heroes of Azeroth are looking like a tasty meal...
• Iridikron the Stonescaled: Iridikron is a powerful Incarnate who wields both the power and the patience of earth itself. He wishes to topple the Aspects and rid the world of the titan's influence. However, his exact plans to do so are not yet known. Why has he joined forces with the infinites? Whatever the answer, he must be stopped.
• Tyr, the Infinite Keeper: With the true timeline now altered by Murozond's rise, the heroes of Azeroth are faced with many oddities. Chief among them being Titan-Keeper Tyr joining forces with the infinite dragonflight. His legendary loyalty now turned against them, the heroes of Azeroth have no choice but to fight. To win.
• Morchie: Morchie is the alternate form of Chromie, created by a timeline where Murozond rose and the infinites reigned supreme. And it so happens that she rather enjoys being part of the true timeline, and would like to keep it that way. Unfortunately, the heroes of Azeroth keep getting in the way of her plans.
• Time-Lost Battlefield: One of the many battles between the Alliance and Horde have bled into the Timeways, and it's up to the heroes of Azeroth to put an end to this time anomaly in order to continue their journey.
• But first they will have to face Grommash Hellscream, one of the Horde's mightiest chieftains. For the Alliance!
• But first they will have to face Anduin Lothar, one of the Alliance's greatest commanders. For the Horde!
• Chrono-Lord Deios and the Infinite Dragonflight: At long last, the infinite dragonflight shall usher in a new dawn for the world of Azeroth. Chrono-Lord Deios has traveled far into the past to ensure that Murozond shall rise. The heroes of Azeroth have already seen him succeed once. This time, can they stop him?