Zatannurday: Helm of Fate/Nabu on Constantine?

Some more images coming from the new Constantine TV show including more glimpses into the DCU.
First up the Helm of Nabu as worn by Doctor Fate.

The image, as scooped by my good friends at the Tower of Fate  Blog.

Could a Zatanna guest shot be in store as well?
Keep an eye here for any Zatanna related Constantine news and over at Tower of Fate for any Doctor Fate news.