Adventure Comics, Vol. 1 #421 (1972)

Demon Spawn / The Brave And The Broken!
"Demon Spawn": A cloaked, green-clad woman named Nightflame wielding a sword and displaying fearsome sorcery powers appears in San Francisco, raises havoc, and demands that Supergirl be brought to her. Meanwhile, in the offices of KSF-TV news, Linda and Nasty are bickering as usual. Linda storms off to cool down in her office but she is so angry she punches the wall and makes the whole building shake. Linda hurries to cover the cracked wall. Geoff and Nasty come to check in on her. 
Release Date: 1972