Shadow Spiders were very valuable animals.
Their venom was an important ingredient for making poison, while Spider Carapace could be used to make leather armor and Chain Main Armor. Many blueprints required the use of these their materials. Shadow Spider legs were also useful in cooking.
However, the most precious of all was Shadow Spider Silk. This material was incomparable to the usual rare materials.
The Blood Island Shadow Spiders made up a considerable proportion of the Shadow Spiders. Their levels were quite low – about level 25 or so – which meant that they could be easily farmed with some antidotes.
Unfortunately, the Shadow Canyon on Blood Island was controlled by the Draenei and they had set aside a considerable force to kill anyone who hunted their Shadow Spiders.
Despite this, there were many players who still tried their luck at the prospect of making some money.