How can you create a combo with Tameshi, Reality Architect, Mind Over Matter, Ancient Den, Darksteel Citadel?
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[START OF COMBO]This combo can be formed with Tameshi, Reality Architect, Mind Over Matter, Ancient Den, Darksteel Citadel

Color identity: WU
Mana cost: 
Steps:
  1. Activate Ancient Den by tapping it, adding {W}.
  2. Activate Mind over Matter by discarding Darksteel Citadel, untapping Ancient Den.
  3. Activate Ancient Den by tapping it, adding {W}.
  4. Activate Tameshi by paying {W} and returning Ancient Den from the battlefield to your hand, returning Darksteel Citadel from your graveyard to the battlefield.
  5. Activate Mind over Matter by discarding Ancient Den, untapping any applicable permanent.
  6. Activate Tameshi by paying {W} and returning Darksteel Citadel from the battlefield to your hand, returning Ancient Den from your graveyard to the battlefield.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite mana permanents you control can produce
  - Infinite self-discard triggers
  - Infinite untap of permanents you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Tameshi, Reality Architect must be on the battlefield
  - Mind Over Matter must be on the battlefield
  - Ancient Den must be on the battlefield
  - Darksteel Citadel must be in your hand
[END OF COMBO PREREQUISITES]
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