Are you running Electro characters in your Genshin Impact team? Well, if you are, you're going to need plenty of materials and drops from Electro Hypostasis in order to ascend your heroes. The probem? Elecro Hypostatis is electro, so you won't be able to damage him with your electro skills and abilities, which can make him tough for teams that rely on electricity.
You can plow him down with standard (normal) damage, but you will need other elements in order to defeat it, even if they are on other characters. In the example here, a fire character pops out for just a few seconds during the boss healing phase, where you must destroy three triangles or the boss will heal up and keep assaulting you.
It's possible to destroy all three triangles in one phase, but depending on your team composition and non-electro abilities it make take a few phases. When defeated, enjoy great boss drops and especially critical electro Ascension materials for boosting your Razor and Fischl. And any other 5 star characters you're lucky enough to have!