How can you create a combo with Halo Fountain, Intruder Alarm, Ensoul Artifact?
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[START OF COMBO]This combo can be formed with Halo Fountain, Intruder Alarm, Ensoul Artifact

Color identity: WU
Mana cost: 
Steps:
  1. Activate a creature you control by tapping it, adding {W}.
  2. Activate Halo Fountain's first ability by paying {W}, tapping and untapping it, creating a 1/1 Citizen creature token.
  3. When the Citizen enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite mana creatures you control can produce
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Halo Fountain does not have summoning sickness.
  - You control a creature that can tap to produce at least {W}.
  - Ensoul Artifact attached to Halo Fountain.
[END OF COMBO PREREQUISITES]
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