How can you create a combo with Soul Echo, Soul Conduit, Necropotence?
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[START OF COMBO]This combo can be formed with Soul Echo, Soul Conduit, Necropotence

Color identity: WB
Mana cost: {6}
Steps:
  1. Activate Necropotence by paying 1 life, exiling the top card of your library face down.
  2. Repeat step 1 until you have zero life.
  3. Activate Soul Conduit by paying {6} and tapping it, exchanging your life total with an opponent's.
  4. The opponent loses the game due to having zero life.
  5. You may repeat this on each of your turns.[END OF COMBO STEPS]

Result:
  - Target player loses the game on each of your turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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