How can you create a combo with Nether Traitor, Sifter of Skulls, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Nether Traitor, Sifter of Skulls, Phyrexian Altar

Color identity: B
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Nether Traitor, adding {B}.
  2. Nether Traitor dies, triggering Sifter of Skulls, crating a 1/1 Eldrazi Scion creature token.
  3. Activate Phyrexian Altar by sacrificing the Eldrazi Scion token, adding one mana of any color.
  4. The Eldrazi Scion dies, triggering Nether Traitor, causing you to pay {B} to return Nether Traitor from your graveyard to the battlefield.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

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