I'm pretty sure you're supposed to put the card image up even if you don't yet have art for it.
You don't need a card image.
Aside from that I have to agree with everyone else in that darkness seems more fitting.
Like everyone else said this card is best in darkness before more changes are made. I'm kind of interested in the creature version tha Flayne has suggested.
As soon as I have some time, I'll make the two versions and add card art.