Mossflayer Eye

Mossflayer Eyes drop from the following forest trolls in Zul'Mashar in the Eastern Plaguelands:
 * Infected Mossflayer
 * Mossflayer Shadowhunter
 * Mossflayer Cannibal
 * Mossflayer Scout
 * Warlord Thresh'jin

As a quest objective

 * Righteous Indignation