Battlecry: Summon 1/1 Whelps until your side of the battlefield is full.
Onyxia long manipulated the Stormwind Court by disguising herself as Lady Katrana Prestor. You would have thought that the giant wings and scales would have been a giveaway.
- "You dare challenge the daughter of Deathwing?"
 How to get
The main power of Onyxia is swarming your opponent with 1/1 Whelps. Each player can have a maximum of 7 minions on their side of the field, meaning Onyxia will summon up to 6 Whelps. Note that if the battlefield is already full by the time her Battlecry is activated, no Whelps will be summoned. Unusual for Battlecry summons, Onyxia potentially summons Whelps to both sides of herself.
With such a powerful Battlecry Onyxia has the potential to be one of the greatest game-changers in the game. This is because the fewer minions the player has, the more they stand to recieve when Onyxia comes into play. This makes it a great idea to use existing minions to clear away any enemy minions before playing Onyxia, ensuring as many Whelps as possible are summoned.
Onyxia works especially well with druid and shaman decks, and with effects which buff all of the player's minions. Synergistic cards include the druid card Soul of the Forest, which makes all friendly minions summon a 2/2 Treant when they die, and Bloodlust, which grants all friendly minions +3 Attack this turn. Knife Juggler also works well with Onyxia, dealing 1 damage for each Whelp summoned, as well as for Onyxia herself.
- You dare challenge the daughter of Deathwing?
- You shall pay for your insolence!
Onyxia was the daughter of Deathwing and his Prime Consort Sintharia and the temporary broodmother of the black dragonflight on Azeroth. After carefully calculating her plans for many years, she entered into a pact with her elder brother, Nefarian, to take over for their missing father and gain control of the entire flight. To this end, she had begun manipulating many mortals and dragons alike to her own ends and wielded considerable political power over many groups.
After being slain and beheaded by Varian Wrynn, she was reanimated by her brother Nefarian as an electrical undead monstrosity. Ultimately, she would be destroyed once more, along with Nefarian, in the Blackwing Descent.
 Patch changes
- Patch 220.127.116.1188 (2013-06-22): Now has a Battlecry: Summon 1/1 Whelps until your side of the battlefield is full. No longer does 2 damage to all characters when drawing a card.