Serpentshrine Cavern

Located in Zangarmarsh, Serpentshrine Cavern is the first full size and full length raid in The Burning Crusade.

Attunement

During Heroic Slave Pens (requires Cenarion Expedition - Revered) you will encounter an imprisoned Draenei who gives you a quest. You need to collect a drop from Gruul the Dragonkiller and one from Nightbane then return to him. He will then cast a spell on you which completes your attunement.