How can you create a combo with Preston Garvey, Minuteman, Aggravated Assault?
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[START OF COMBO]This combo can be formed with Preston Garvey, Minuteman, Aggravated Assault

Color identity: RGW
Mana cost: 
Steps:
  1. At the beginning of your combat phase, Preston's first ability triggers, putting a Settlement Aura token onto the battlefield attached to a land you control.
  2. Declare Preston as an attacker.
  3. Preston's second ability triggers, untapping each enchanted permanent you control.
  4. Move to your postcombat main phase.
  5. Activate any number of enchanted permanents you control by tapping them, adding at least {3}{R}{R}.
  6. Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and causing you to get an additional combat and main phase after this one.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite combat phases
  - Infinite mana creatures you control can produce
  - Infinite untap of creatures you control
  - Infinite untap of enchanted permanents you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Enchanted permanents you control can tap to produce at least {3}{R}.
  - You control at least one land that does not have a Settlement token attached to it, or enchanted permanents you control can tap to produce at least {3}{R}{R}.
  - An opponent cannot block and kill Preston.
[END OF COMBO PREREQUISITES]
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