Merely a setback

Merely a setback is a catch phrase originated by Kael'thas Sunstrider in Magisters' Terrace. It has become a common utterance whenever there is the perception that a boss who was previously defeated is merely being recycled, and has even appeared multiple times in World of Warcraft as a result.

List of bosses using the quote

 * Kael'thas Sunstrider in Magisters' Terrace yells Yell
 * Prince Valanar in Icecrown Citadel yells Yell
 * Hogger in the Stockades yells Yell
 * Crusader Lord Valdelmar in Tyr's Hand yells Yell

List of setbacks

 * Dar'Khan Drathir in the Sunwell Trilogy and Deatholme
 * Kael'thas Sunstrider in Tempest Keep and Magisters' Terrace
 * Archmage Arugal in Shadowfang Keep and Bloodmoon Isle
 * Baron Rivendare in Stratholme and Naxxramas
 * Kel'Thuzad in the original and new Naxxramas
 * Anub'arak in Azjol-Nerub and Trial of the Crusader
 * Onyxia in her original, her new lair and Blackwing Descent
 * Prince Keleseth in Utgarde Keep and Icecrown Citadel
 * Prince Valanar in Naxxanar and Icecrown Citadel
 * Prince Taldaram in Ahn'kahet: The Old Kingdom and Icecrown Citadel
 * Zalazane in the Echo Isles
 * Sicco Thermaplugg in Gnomeregan
 * Hogger in Elwynn Forest and Stormwind Stockade
 * Crusader Lord Valdelmar in Tyr's Hand
 * Malor the Zealous in the original and new Stratholme
 * Crimson Hammersmith in the original and new Stratholme
 * Cannon Master Willey in the original and new Stratholme
 * Archivist Galford in the original and new Stratholme
 * Balnazzar in the original and new Stratholme
 * Nefarian in Blackwing Lair and Blackwing Descent where he yells "Oh, I do hope this 'raid' will amuse me more than the last!".
 * Ragnaros in Molten Core, the Inner Spire and the Firelands.
 * Sintharia in Night of the Dragon and the Bastion of Twilight
 * Ranger Lord Hawkspear in Eastern Plaguelands
 * Sylvanas Windrunner in Quest:The Hunt for Sylvanas