How do you get nightbanes armor?

To obtain Nightbane's armor in the game "World of Warcraft," you need to defeat Nightbane, a boss found in the Crypts of Karazhan. He is summoned by completing a quest that involves collecting a specific item from the surrounding areas. Once defeated, Nightbane has a chance to drop various pieces of his armor set, which players can then equip. Be sure to check the loot table for specific armor pieces and their drop rates.