Giant-Size Avengers#2(1974)

Continuing from the events in Avengers Vol 1 129... Hawkeye has finished busting up some thieves when his attention is directed to the star shining above Avengers Mansion. Arriving there, he finds out from Jarvis that the Avengers are missing. Swordsman and Rama-Tut arrive and recruit Hawkeye to help them stop Kang from starting World War 3. They travel back to Egypt and battle against three fellow Avengers (Thor, Iron Man & Vision) who have been captured and put inside Macrobots by Kang. During the battle, Rama-Tut reflects on his past: how he is a future version of Kang who grew tired of the constant conquest and resumed his Rama-Tut guise and ruled ancient Egypt again as a just ruler. However, he decided to change his destiny, so he was put into suspended animation by one of his medicine men to this point in history when his past self -- Kang -- would travel back in time seeking the Celestial Madonna. Defeating the Macrobots and freeing the Avengers, they make an attack on Kang, and when Kang and Rama-Tut meet face to face, time goes wild and Mantis is revealed to be the Celestial Madonna. During the fight between Kang and Rama-Tut, the Swordsman jumps into the path of an energy weapon, sacrificing himself to save the others, and Kang and Rama-Tut are sent outside of time. Following the climax of the battle, the Swordsman dies and the Avengers mourn the loss of their ally.