"Now is the mighty hour come," purrs Vickers' Dark Lord as lightning cracks over his Mordor stronghold of Barad-dûr in this first full trailer for The Rings Of Power Season 3. And that's just what we see in the trailer (scored impeccably, it must be said, once more by the one and only Bear McCreary.) Among the highlights are Eddie Marsan as King Durin IV’s older brother, Thrain (we called it! The official synopsis for The Rings Of Power Season 3 reads: "In Season Three, Middle-earth is at war. Only a few isolated pockets stand between the Dark Lord and total victory – Khazad-dûm, where the Dwarves are now sealed deep within their mountain halls, and the elven realms of Lindon and Rivendell, which are protected by their Three Rings.