simple solution: also add a dark spider/recluse. i see no reason why 3 elements can share in the spidery goodness.
If only it were that simple. You can't really make cards that would work on other ideas. They have to work with what we do have.
First off, I like the photo for the art. Problem, though, is that's a photo. But that's an art issue, not idea.
I think for a combination like that, the 6
cost is a bit much. Maybe lower to 4~5?