Storm's Crown is a 
Trial in Final Fantasy XIV: Endwalker added in patch 6.2 "Buried Memory". It is a battle against the Empress of the Winds, Barbariccia.
Story[]
Normal[]
Your search for the great wyrm Azdaja in the void has brought you to Zero's domain, where you hope to find information that will lead you to the mysterious Golbez. But it soon becomes apparent that your victory over Scarmiglione did not go unnoticed, for now another archfiend, the ravishing-but-cruel Barbariccia, has descended to challenge you. While there is no guarantee that she will yield the answers she teases, the only way is forward, and you sally forth to confront her in her stormy domain.
In-game description
Extreme[]
The void─a world without death, where the strong devour the weak... Upon hearing your tales from that lightless place, the wandering minstrel cannot help but wonder: what if Barbariccia had devoured more of the great wyrm's aether? Having mused thus, the man then calls upon his not inconsiderable dramatic flair to weave a new verse, one which imagines a vastly empowered archfiend. The breezy melody sets your mind adrift upon shadowed winds, where you relive the stormy encounter, now stormier still...
In-game description
Progression[]
Normal[]
Extreme[]
Musical themes[]
The theme played through the fight is a rendition of "Battle With the Four Fiends" from Final Fantasy IV, known in-game as "Battle With the Four Fiends (Buried Memory)".
