Spider YB to a YB you have a chance at normals, yb's, spiders, ivory's and ivory spiders. Think thats right. Not sure on the %. But thats what you could get. Yeah the YB is a het ivory. Yeah the white snake with the faint yellow spider pattern would be great. I have a YB but no spiders Im going to try the same thing only use a pinstripe. But that will be a bit since I dont have the pin yet and my YB is only 250g right now.