Perpetual Caliber is a Rarity 4 Character Ascension Item and Elemental Stone used to ascend Characters in Genshin Impact. This new item came with the Update 3.1, and characters like the 5 starNilou and 4 starLayla need the Perpetual Caliber for ascension. If you’re planning on getting either (or both), read on because in this guide I’ll show you got to get your Perpetual Calibers.
How to Get Perpetual Caliber in Genshin Impact
To get Perpetual Caliber you’ll need to defeat a Lv.30+ Aeonlight Drake, a boss type enemy. Even though its description says “Possible Rewards”, the Perpetual Caliber is actually a guaranteed drop, so don’t worry about anything else but beating it.
Aeonlight Drake Location
To find the Aeonlight Drake, you’ll have to go through a cave in the Devantaka Mountain area, located in Sumeru.
To reach the spot marked in the map, Fast Travel to the Teleport Waypoint that appears in the image and look back. You’ll see a huge entrance where you’ll go through. After that take a turn to your right, and follow a path engraved with stone in a more or less straight line.
After just a little of running, you’ll come to the end of a short tunel and you’ll be able to see the Aeonlight Drake, sleeping and waiting for you to approach to start a fight. Make sure to bring a good ranged character to the fight, as this boss can fly and will get out of your reach!