How can you create a combo with Eternal Witness, Sevinne's Reclamation, Phyrexian Altar, Pitiless Plunderer, Pawn of Ulamog?
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[START OF COMBO]This combo can be formed with Eternal Witness, Sevinne's Reclamation, Phyrexian Altar, Pitiless Plunderer, Pawn of Ulamog

Color identity: WBG
Mana cost: {2}{W}
Steps:
  1. Cast Sevinne's Reclamation by paying {2}{W}, returning Eternal Witness to the battlefield.
  2. Eternal Witness enters the battlefield, returning Sevinne's Reclamation from your graveyard to your hand.
  3. Activate Phyrexian Altar by sacrificing Eternal Witness, adding {W}.
  4. Pitiless Plunderer and Pawn of Ulamog triggers.
  5. Resolve the Pitiless Plunderer, creating a Treasure token.
  6. Resolve the Pawn of Ulamog trigger, creating a 0/1 Eldrazi Spawn creature token.
  7. Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
  8. Activate Eldrazi Spawn by sacrificing it, adding {C}.
  9. Pitiless Plunderer triggers, creating a Treasure token.
  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 8, 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
  - Infinite magecraft triggers
  - Infinite sacrifice triggers
  - Infinite storm count
  - Infinite Treasure tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Eternal Witness must be in the graveyard
  - Sevinne's Reclamation must be in your hand
  - Phyrexian Altar must be on the battlefield
  - Pitiless Plunderer must be on the battlefield
  - Pawn of Ulamog must be on the battlefield
[END OF COMBO PREREQUISITES]
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