The level 80 version of Onyxia drops headpieces with similar names and models as the Tier 2 ones the original level 60 version had. (The actual Tier 2 headpieces now drop off Nefarian in Blackwing Lair). She also drops a new version of [Quel'Serrar] since the questline for the original version has been removed from the game. All of these items have been upgraded to reflect Onyxia's new status as a Tier 9-level boss. There is also an extremely fast mount named Brood of Onyxia that drops off her. Item levels range between 232 (10-player mode) and 245 (25-player mode).
Onyxia's Lair is a level 80 raid dungeon located in the Wyrmbog, Dustwallow Marsh. It is home to Onyxia, the brood mother of the black dragonflight.
Onyxia's Lair was originally a level 60, 40-player raid dungeon, one of two that were available upon release of World of Warcraft (the other being Molten Core). It was re-tuned as a level 80 raid dungeon in patch 3.2.2 in honor of World of Warcraft's 5-year anniversary. Like all other Wrath of the Lich Kingraid dungeons, it has both 10-man and 25-man modes.
Onyxia is the daughter of the mighty dragon Deathwing, and sister of the scheming Nefarian, Lord of Blackrock Spire.
It is said that Onyxia delights in corrupting the mortal races by meddling in their political affairs. To this end it is believed that she takes on various humanoid forms and uses her charm and power to influence delicate matters between the different races. Some believe that Onyxia has even assumed an alias once used by her father - the title of the royal House Prestor. When not meddling in mortal concerns, Onyxia resides in a fiery cave below the Dragonmurk, a dismal swamp located within Dustwallow Marsh. There she is guarded by her kin, the remaining members of the insidious black dragonflight.