How can you create a combo with Shrieking Drake, Sheoldred, the Apocalypse, Defiler of Dreams?
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[START OF COMBO]This combo can be formed with Shrieking Drake, Sheoldred, the Apocalypse, Defiler of Dreams

Color identity: UB
Mana cost: 
Steps:
  1. Cast Shrieking Drake by paying 2 life.
  2. Defiler of Dreams triggers, causing you to draw a card.
  3. Sheoldred's second ability triggers, causing you to gain 2 life.
  4. When Shrieking Drake enters the battlefield, it triggers, returning itself to your hand.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Near-infinite lifegain triggers
  - Near-infinite enters the battlefield
  - Infinite draw triggers
  - Near-infinite leaves the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Shrieking Drake must be in your hand
  - Sheoldred, the Apocalypse must be on the battlefield
  - Defiler of Dreams must be on the battlefield
  - You have at least 3 life
[END OF COMBO PREREQUISITES]
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