Cheap Magic Mirror Mage Deck (Heroic Mode)

This fight can be very frustrating to overcome because of how quickly things can get out of control if you do not have the right cards in your deck to answer Magic Mirror's threats. The key to this deck is the amount of early answers that you have to his board states, such as Arcane Explosion, Twilight Flamecaller, and Unstable Ghoul. These cards will help you to keep control of his board for the most part and buy you important time to stabilise.

Doomsayer is the most important card in the deck and is the sole reason for the inclusion of Duplicate and Echo of Medivh in the deck. Any time you play a Doomsayer while your opponent has space on their board, you will get a guaranteed board clear. It is important, however, to not play a Doomsayer unless you can immediately create additional copies of it with Echo of Medivh or Duplicate. If you run out of Doomsayers in this fight, you will quickly run out of ways to answer the opponent's board.

Rhonin is the most threatening card in your opponent's deck and is the reason an Ironbeak Owl is included in the deck; make sure you Silence the 7/7 copy and not the 1/1 to avoid disasters. If you do not Silence one of the Rhonin and allow Magic Mirror to gain 6 Arcane Missiles, then you can often just lose to burst damage from his Spell Damage minions.

The ultimate goal of the deck is fatigue, but Majordomo Executus is included in the deck to sometimes pull out a quick win. Since your opponent summons a 1/1 Executus of their own, you can ping this minion off and then immediately kill your opponent from 8 Health. Make sure you never play your own Executus unless you are in a stable position, preferably with Ice Block up.