How can you create a combo with Tenacious Dead, Altar of Dementia, Pitiless Plunderer, Sifter of Skulls, Zulaport Cutthroat?
user
[START OF COMBO]This combo can be formed with Tenacious Dead, Altar of Dementia, Pitiless Plunderer, Sifter of Skulls, Zulaport Cutthroat

Color identity: B
Mana cost: 
Steps:
  1. Sacrifice Tenacious Dead to Altar of Dementia, milling target opponent for 2.
  2. Sifter of Skulls, Pitiless Plunderer, Zulaport Cutthroat, and Tenacious Dead trigger; stack the triggers to resolve in that order.
  3. Sifter of Skulls generates an Eldrazi Scion token; sacrifice it to float {1} (Pitiless Plunderer and Zulaport Cutthroat trigger again).
  4. Resolve two Pitiless Plunderer triggers, generating two Treasure tokens; crack one to float {B}.
  5. Resolve two Zulaport Cutthroat triggers, draining opponent for 2.
  6. Resolve the Tenacious Dead trigger, paying {1}{B} to return it to the battlefield from the graveyard.
  7. Repeat the sacrifice-recursion loop, gaining one Treasure token per loop and draining opponent infinitely with Zulaport Cutthroat triggers.[END OF COMBO STEPS]

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

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