Nova (1976) #11

Story by Marv Wolfman. Art by Sal Buscema and Frank Giacoia.

The ultra powerful Sphinx has crushed Diamondhead, Powerhouse, and the Condor. Now, Nova stands alone against this ancient and nigh unstoppable power. And if he loses, Richard Rider shall be “Nova No More!”

Newsstand 32 pages. Cover price $0.30. (Note: reference image, not an actual scan)