Omor's Hoof

Omor's Hoof is one quest items required to complete the Ramparts boss kill quest.

Source
Omor's Hoof drops from Omor the Unscarred in the Hellfire Ramparts in Hellfire Citadel.

Omor's Hoof as a quest objective

 * given by Stone Guard Stok'ton
 * given by Lieutenant Chadwick