Twilight Guardian

Twilight Guardians are found in Ulduar.

Abilities

 * Concussion Blow-A brutal strike that deals weapon damage and stuns the opponent for 3 sec.
 * Devastate-Sunder the target's armor causing the Sunder Armor effect. In addition, causes 50% of weapon damage plus 90 for each application of Sunder Armor on the target.  The Sunder Armor effect can stack up to 5 times.
 * Sunder Armor-Hacks at an enemy's armor, reducing it more per Sunder Armor. Can be applied up to 5 times. Lasts 20 sec.
 * Thunderclap-Damages all nearby enemies for 4250 to 5750 Nature damage and slows attack speed by 20%.