How can you create a combo with Tenacious Dead, Altar of Dementia, Pitiless Plunderer, Pawn of Ulamog?
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[START OF COMBO]This combo can be formed with Tenacious Dead, Altar of Dementia, Pitiless Plunderer, Pawn of Ulamog

Color identity: B
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrificing Tenacious Dead.
  2. When Tenacious Dead dies, it triggers itself, Pitiless Plunderer and Pawn of Ulamog.
  3. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
  4. Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn creature token.
  5. Resolve the Altar of Dementia ability, causing target player to mill one card.
  6. Activate the Treasure by tapping and sacrificing it, adding {B}.
  7. Activate the Eldrazi Spawn by sacrificing it, adding {C}.
  8. When the Eldrazi Spawn dies, Pitiless Plunderer triggers, creating a Treasure token.
  9. Resolve Tenacious Dead's ability from step 2, paying {1}{B} to return it from your graveyard to the battlefield tapped.
  10. Repeat any number of times.
  11. Once you have infinite Treasure tokens, you may repeat this loop spending mana from Treasures instead of Eldrazi Spawns in step 7, giving you infinite Eldrazi Spawn tokens.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite creature tokens with 0 power
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinitely self-mill
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

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