The Emperor of Fire and Iron is one of two new respawning world bosses in the Fontaine region of Genshin Impact, and finding and defeating it is the only way to get Ascension materials for the new 5-star character Lyney. You’ll need 46 mats in total, so expect to be farming the boss frequently if you manage to pull Lyney and want to max him out to level 90. We’ll cover how to find and beat this new challenge in this guide.
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Where to Find and How to Beat the Emperor of Fire and Iron in Genshin ImpactThe Emperor of Fire and Iron lives in a cave beneath the surface of Fontaine, reachable via diving into an underwater tunnel between the southern tips of the Beryl and Belleau regions. You can travel either slightly west from the Teleport Waypoint at the southernmost tip of Belleau near the West Slopes of Mont Automnequi or east from the Waypoint south of the Elynas area.
Once you reach the bottom of the tunnel, you’ll be able to rise into the cave proper, where the boss awaits. It won’t attack immediately, and you need to get pretty close to start the fight, but once it awakens, get ready for a battle.
The Emperor of Fire and Iron is Pyro-aligned, so you’ll want to bring Hydro and Cryo characters to the party. If you have Yelan, Xingqiu, Ayaka, or Ganyu, they offer some of the best bang for your buck. A hyperbloom team works wonders against this boss (as it does in so many other scenarios), and that’s what I used to take him out in no time flat.
You’ll see a bar above the boss’s head showing the health of its two molten horns. Reduce the bar to zero, and the boss will sit staggered for more than five seconds, giving you plenty of time for easy damage.
As for attacks,
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