HIP Comics #1945

In "Byrrah's uitdaging," Namor’s cousin Byrrah rises to power in Atlantis by condemning the Sub-Mariner’s rule as reckless and tyrannical, winning the trust of both the people and the council. When he issues a challenge to Namor for sole rule, the confrontation takes a shocking turn—just as Byrrah claims victory, Namor’s powers vanish, leaving him helpless in the face of his cousin’s triumph.