If Alexstrasza was immediately destroyed during the Plague Quarter of Curse of Naxxramas, Equality will not be tolerated by Kel'Thuzad. Hearthstone player Erath found this the hard way as he was battling against Baron Rivendare over at the Military Quarters. Once he cast Equality, Kel'Thuzad didn't allow it and nullified the card's effect.
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