Conjura

I love obscure characters... and Conjura fits into that category. I usually don't copy and paste descriptions, but I wrote the ComicVine.com page I'm copying from, so I'm plagiarizing myself lol:

Conjura, a derivative of DC's Zatanna, first appeared in an obscure 1978 DC Comic - The Super Dictionary. By chanting backwards, she is able to cast magical spells and is also adept in avoiding oncoming danger thanks to her necklace that glows whenever trouble is near. She uses a tunnel to travel through time.

I love her costume!