Thor #213 (1973)

"The Demon Brigade!!"  Cover pencils by Jim Starlin, inks by Frank Giacoia. written by Gerry Conway (Plot) and Len Wein (Script), pencils by John Buscema and Don Perlin, inks by Vince Colletta.  After a fierce battle, the Asgardians are defeated. Thor awakens in a dungeon, and discovers that the food is drugged, keeping the rest of the Asgardians enthralled. Thor breaks free and joins a resistance to help overthrow Sssthgar and the Vrellnexians. They destroy the drug factories and abandon Sssthgar to the former slaves of Golden Star, then head off to rescue the Lady Sif, sold to some miners in the Dark Nebula.

Good condition.