How can you create a combo with K'rrik, Son of Yawgmoth, Buried Alive, Necromancy, Chainer, Dementia Master, Viscera Seer, Gray Merchant of Asphodel?
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[START OF COMBO]This combo can be formed with K'rrik, Son of Yawgmoth, Buried Alive, Necromancy, Chainer, Dementia Master, Viscera Seer, Gray Merchant of Asphodel

Color identity: B
Mana cost: {4}
Steps:
  1. Cast Buried Alive by paying {2} and two life, searching for Chainer, Viscera Seer, and Gray Merchant of Asphodel.
  2. Cast Necromancy by paying {2} and two life.
  3. Necromancy enters the battlefield, returning Chainer onto the battlefield attached with Necromancy.
  4. Activate Chainer by paying nine life, returning Viscera Seer from your graveyard to the battlefield as a Nightmare in addition to its other creature types.
  5. Activate Chainer by paying nine life, returning Gray Merchant of Asphodel from your graveyard to the battlefield as a Nightmare in addition to its other creature types.
  6. Gray Merchant of Asphodel enters the battlefield, causing each opponent to lose life equal to your devotion to black and causing you to gain life equal to the amount of life lost this way.
  7. Activate Viscera Seer by sacrificing Gray Merchant of Asphodel, scrying 1.
  8. Repeat from step 5.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite lifegain
  - Infinite lifegain triggers
  - Infinite lifeloss
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite scry 1
  - Put all creature cards from all graveyards onto the battlefield under your control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - K'rrik, Son of Yawgmoth must be on the battlefield
  - Buried Alive must be in your hand
  - Necromancy must be in your hand
  - Chainer, Dementia Master must be in the graveyard or in the library
  - Viscera Seer must be in the graveyard or in the library
  - Gray Merchant of Asphodel must be in the graveyard or in the library
  - Your life total is at least 18.
  - Your devotion to black is at least ten or you have at least two opponents.
[END OF COMBO PREREQUISITES]
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