Wrath of the Lich King

Tier 7Naxxramas Tier 7The Obsidian Sanctum Tier 7The Eye of Eternity Tier 7-10Vault of Archavon Tier 8Ulduar Tier 9Trial of the Crusader Tier 9Onyxia’s Lair (level 80) Tier 10Icecrown Citadel Tier 10The Ruby Sanctum