How can you create a combo with Turntimber Sower, Worm Harvest, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Turntimber Sower, Worm Harvest, Phyrexian Altar

Color identity: BG
Mana cost: {2}{B/G}{B/G}{B/G}
Steps:
  1. Cast Worm Harvest from your graveyard for its retrace cost by paying {2}{B/G}{B/G}{B/G} and discarding a land card, creating a 1/1 Worm creature token for each land card in your graveyard.
  2. Activate Phyrexian Altar six times by discarding six Worms, adding {2}{B/G}{B/G}{B/G}{G}.
  3. Activate Turntimber Sower by paying {G} and sacrificing three Worms, returning a land card from your graveyard to your hand.
  4. Repeat.
  5. If you have at least ten land cards in your graveyard as Worm Harvest resolves, this combo nets infinite creature tokens and mana.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite colored mana
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite storm count
  - Infinite creature tokens
  - Infinite self-discard triggers
  - Infinite magecraft triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Turntimber Sower must be on the battlefield
  - Worm Harvest must be in the graveyard
  - Phyrexian Altar must be on the battlefield
  - You have at least eight land cards in your graveyard.
  - You have at least one land card
[END OF COMBO PREREQUISITES]
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