Onyxia's Lair is a classic raid dungeon in the game World of Warcraft, located in the Dustwallow Marsh region. It serves as the home of Onyxia, a powerful black dragon and a key antagonist in the game's lore. Players must navigate through her lair, battling various enemies and overcoming challenges to reach her. The raid is designed for groups of up to 40 players and features multiple phases in the final encounter with Onyxia. Successful completion rewards players with valuable loot and contributes to the overarching storyline of the game, highlighting the conflict between dragons and mortals.