Scarlet Witch: The Power Of The Darkhold

Wanda never uses her basic Attack or Thwart as Molecular Decay and Hex Bolt are her main source of actions, so instead, she defends.

Between her inherent Chaos Control, Magic Shield, Scarlet Witch's Crest and Preemptive Strike, she should be able to defend for zero, which triggers Unflappable.

Using Spiritual Meditation, Avengers Mansion and The Sorcerer Supreme, she should rattle through her deck fairly quickly, ensuring that most of her key cards get set up and that she can cycle through Hex Bolt and Molecular Decay fairly quickly.

Chaos Magic is a solid card to drop Luke Cage, Iron Fist or Avengers Mansion, so The Power of Protection is pretty useless in this deck and traded it in for Nerves of Steel to pay for Preemptive Strike and Never Back Down to maintain that card advantage.

Also, don't afraid to use her Crest on a boost card then Preemptive Strike to do additional damage to the Villain.