During the summer of 1973, Englehart and artists Bob Brown and Sal Buscema produced “The Avengers-Defenders Clash” storyline which crossed over between the two team titles. “The Celestial Madonna” arc linked Mantis’ origins to the very beginnings of the Kree-Skrull conflict in a time-spanning adventure involving Kang the Conqueror, and Immortus, who were past and future versions of each other. Mantis was revealed to be the Celestial Madonna, who was destined to give birth to a being that would save the universe. It was revealed that the Vision’s body had only been appropriated, and not created by Ultron, and that it originally belonged to the 1940s Human Torch. With his origins clear to him, the Vision proposed to the Scarlet Witch. The “Celestial Madonna” saga ended with their wedding, presided over by Immortus. The Beast and Moondragon joined the team soon after. George Pérez became the title’s artist with issue #141 (Nov. 1975) which saw the start of a seven-part story featuring the Squadron Supreme and the Serpent Crown. In 2010, Comics Bulletin ranked Englehart’s run on The Avengers eighth on its list of the “Top 10 1970s Marvels”.