Nuramoc

Nuramoc is a rare mob chimaera that spawns in Netherstorm. It flies relatively high along one of two patrolling paths.

Attacks and abilities

 * Basic Melee: Hits a decently-geared tank for around 1500.
 * Poison Bolt: A ranged nature attack for 1300, with an additional poison.
 * Lightning Bolt: A ranged nature attack that jumps to multiple targets. Around 1300 first hit.
 * Prismatic Shield: Deals 45 arcane damage to attackers when hit by a spell.

Strategy
A balanced group of 5 70s can kill Nuramoc without a great deal of difficulty. Nature resist gear can make the encounter somewhat easier.

The main issue is pulling him, as he flies quite high. If you follow his patrol path, he should come close to the ground at one end of any given patrol.

Past patch 2.4 he appears to have been weakened considerably, and is soloable.

Achievement
Nuramoc is a criterion of the achievements:
 * Medium Rare
 * Bloody Rare

Trivia
Nuramoc was the most powerful rare mob prior to Wrath of the Lich King, while Hemathion was the largest prior to Wrath.