Eye of C'Thun

Eye of C'Thun is the proof of the Old God C'Thun's defeat in the Temple of Ahn'Qiraj. It has a 100% drop rate, and begins a brief quest chain that rewards you with one of the following items:

Note

 * Eye of C'Thun is also the name of C'Thun's gigantic eyeball form in phase 1. However, the item is described as "an eye stalk of the fiend," which is likely the eye of a tentacle.
 * An Eye of C'Thun marble was included in the World of Warcraft: Classic Press Kit.