The Sellian Sealbreaker is a Key Item in Elden Ring that can be used to progress Sorceress Sellen’s questline.

Players can obtain the item by first completing the part of Sellen’s quest that involves finding Primeval Sorcerer Azur and acquiring the Comet Azur Sorcery. Once you have the spell, return to Sellen, and she will task you with finding another Primeval Sorcery known as Stars of Ruin. To get your hands on this one, you’ll need to find Primeval Sorcerer Lusat. That’s where the Sellian Sealbreaker comes in.

The Sellian Sealbreaker is a key that can open the magically sealed door in Sellia Hideaway, a cave found northeast of Sellia, Town of Sorcery in Caelid. Master Lusat won’t be alive by the time you reach him, but you can still get Stars of Ruin from his body and return to Sorceress Sellen to continue her questline.

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