Eye of Naxxramas

The Eyes of Naxxramas are shades patrolling the streets of Stratholme. They are invisible until they encounter intruders when they yell "The living are here" and become visible. If not quickly killed, they summon gargoyles.

Warlocks could cast a Detect Invisibility buff on party members, removing the element of surprise.

Quotes

 * yell

Drops

 * Minion's Scourgestone
 * Ectoplasmic Resonator