Ghostwalk spiders are malevolent hunters that sprang from misguided experiments on Phase Spiders. They are spindly, emaciated things all but devoid of color.
Phantom Webs. Ghostwalk spiders spin ephemeral webs in secluded areas. They spend most of their time stalking prey to paralyze and drag back to their phantom web. As long as these remains lie tangled in ghostly webs they go unnoticed by creatures on the Material Plane, but the spiders eventually cast old kills aside. Adventurers are wise to fear empty caves containing unexplained, desiccated remains.