King Arthur: Legend of the Sword (2017) - Plot - IMDb
https://www.imdb.com/title/tt1972591/plotsummary/
WEBSynopsis. Mordred (Rob Knighton), an iron fist warlock, and his armies lay siege to Camelot, seeking to establish the dominance of magic-wielding Mages over humankind. Uther Pendragon (Eric Bana), king of the Britons, infiltrates Mordred's lair and beheads him, destroying his forces and saving Camelot.
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