Adventure Comics, Vol. 1 #396 (1970)

I Am A Witch! / The Mystery Of The Super-Orphan!
"I Am a Witch!": Once she has dealt with the villains of the Phantom Zone, Supergirl confronts the inventor Amos Ameswell.[1] The man claims to have mastered the black magic arts, but Supergirl dismisses his words as superstitious nonsense. He challenges her to break superstitions on this day, Friday the 13th, including spilling a lot of salt. Supergirl gladly does so, and then she proceeds to leave the house to prove him wrong. But afterwards, wherever she tries to do a good deed, she ends up wreaking destruction instead. 
Release Date: 1970