Dawn of the Infinite is the megadungeon added in Patch 10.1.5 and we have a full list of bosses! Spoilers ahead!
In the new megadungeon, we’ll be fighting it off against, including Iridikron and an evil version of Chromie.
Chronikar
Manifested Timeways
Blight of Galakrond
Iridikron the Stonescaled
Morchie
Tyr, the Infinite Keeper
Time-Lost Battlefield
Chrono-Lord Deios and the Infinite Dragonflight
Some boss models have not yet been implemented.