How can you create a combo with Doppelgang, Archaeomancer?
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[START OF COMBO]This combo can be formed with Doppelgang, Archaeomancer

Color identity: GU
Mana cost: {15}{G}{U}
Steps:
  1. Cast Doppelgang by paying {15}{G}{U}, creating five token copies of Archaeomancer and of the four mana-producing permanents.
  2. When the Archaeomancer tokens enter the battlefield, they trigger, returning Doppelgang and up to four other instant or sorcery cards from your graveyard to your hand.
  3. Activate seventeen of the mana-producing permanent tokens by tapping them, adding at least {15}{G}{U}.
  4. Repeat.
  5. Once you have infinite tokens and mana, you may instead target any other permanents using Doppelgang.[END OF COMBO STEPS]

Result:
  - Infinite copies of any permanent on the battlefield
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite landfall triggers
  - Infinite magecraft triggers
  - Infinite mana permanents can produce
  - Infinite storm count
  - Return all instant and sorcery cards from your graveyard to your hand[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Doppelgang must be in your hand
  - Archaeomancer must be on the battlefield
  - There are four permanents on the battlefield that can collectively tap to produce at least {2}{G}{U}.
[END OF COMBO PREREQUISITES]
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