| | Name | Rules | # |
| Battle Plan | Each opponent draw a card. | 1 |
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| Blunder into the Eggs | Put a Whelp into play for each opposing hero. Those Whelps have ferocity this turn. | 2 |
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| Break in the Action | Each player draws a card. | 3 |
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| Broken Ranks | You may put up to X target allies into their owner's hands, where X is the current stage. | 4 |
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| Burn to a Crisp | Onyxia deals 1 fire damage to target opposing ally for each resource you have. | 5 |
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| Charred Bones | Shuffle any number of target graveyards into their owners' decks. | 6 |
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| Chink in Her Armor | Opponents may destroy target ability of their choice. | 7 |
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| Claw, Claw, Bite | Onyxia deals 1 melee damage to each hero and ally in target player's party. | 8 |
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| Down the Gullet | You may destroy target ally. | 9 |
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| Dragonslayers | Opposing allies have ferocity until your next turn. | 10 |
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| Feeding Time | Put X Whelps into play, where X is the current stage. | 11 |
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| Fickle Fate | Play another event after this one. (Both go into your resource row.) | 12 |
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| Fuel for the Fire | Draw a card for each opposing hero. | 13 |
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| Growing Rage | Draw X cards, where X is the current stage. | 14 |
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| He Who Hesitates… | Opponents exhaust all of their resources. | 15 |
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| Hidden Reserves | Each opponent reveals the top two cards of his deck. He may put a revealed ally card into his hand and the rest on the bottom of his deck. | 16 |
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| High Cost of Dragonslaying, The | You may destroy target equipment. | 17 |
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| Imposing Presence | Put the top X cards of the event deck into your resource row face down, where X is the current stage. | 18 |
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| Lead from the Front | Opposing heroes have protector this turn. | 19 |
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| Lesser of Two Evils | Reveal the top two cards of the Onyxia raid deck. Opponents choose one. Put that card into your hand and the other one on the bottom of your deck. | 20 |
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| Play With Your Food | Roll as many dice as the number of opposing heroes. Then, choose one die for each hero, and Onyxia deals that amount of melee damage to that hero. | 21 |
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| Quicken the Pace | Put the top card of the event deck into your resource row face down. Each opponent puts the top card of his deck into his resource row face down. | 22 |
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| Reign of Fire | Onyxia deals X fire damage to each opposing ally, where X is the current stage. | 23 |
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| Sacrificial Meal | Each opponent destroys one of his abilites, allies, or equipment. | 24 |
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| Searing Flames | You may destroy target ability. | 25 |
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| Second Wind | Each player draws cards until he reaches his maximum hand size. | 26 |
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| Seize the Moment | Opponents choose a player. That player readies all of his cards. | 27 |
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| Smoke and Ash | You may destroy target ability, ally, or equipment. | 28 |
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| Take Cover | Opponents choose a player. Prevent all damage that would be dealt to heroes and allies in that player's party this turn. | 29 |
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| Wing Storm | Exhaust all opposing allies. | 30 |