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Terra Magica is an enhancing Glintstone Sorcery in Elden Ring, found after clearing the Academy Crystal Cave in North Liurnia.
Terra Magica is obtained by clearing the Academy Crystal Cave located under the Academy of Raya Lucaria sealed by an imp gate on the western base of the academy. After defeating the bosses, take the elevator past them to reach a tower within Raya Lucaria, where you'll find the spell at the top of a tower.
Terra Magica buffs magic strength while you stand on the glyph, making it a fantastic spell to use in tandem with Comet Azur. Because it is part of the Comet Azur 1-shot build, it makes our “Best Sorceries” list