Challengers of the Unknown #63 (1968)

None Shall Escape the Walking Evil: After the Legion of the Weird resurrects Mistress Wycker, Count Karnak calls on Kaftu to revive the mummy Tukamenon, who the Legion sends out to destroy the Challengers. Kaftu follows and uses his ruby to blind Tino, then both villains flee. Red donates an eye to his brother. While they recover, the mummy bursts in. As the Challs battle the mummy, Red is rushed out by his nurse, but it's Mistress Wycker in disguise. In the brawl, the mummy is released from Kaftu's power and he runs to punish him. The villains have Tino, but Red says he can find his brother because he now sees what Tino sees.