King in Black: Namor (2020) #3

THE BLACK TIDE lay waste to all that lies before them, cutting a swath of devastation and death across the ocean floor. The only chance to stop them may lie with ATTUMA’s people — and if that fails, nothing stands between The Black Tide and Atlantis itself. A tragedy that will impact Atlantean history forever, and transform friendship into enmity. The secrets of THE KING IN BLACK are buried here.