How can you create a combo with Prototype Portal, Clock of Omens, Battered Golem, Treasure Vault?
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[START OF COMBO]This combo can be formed with Prototype Portal, Clock of Omens, Battered Golem, Treasure Vault

Color identity: C
Mana cost: 
Steps:
  1. Activate Prototype Portal by paying {0}, creating a token copy of Treasure Vault.
  2. When the Treasure Vault token enters the battlefield, Battered Golem triggers, untapping itself.
  3. Activate Clock of Omens by tapping Battered Golem and the Treasure Vault token, untapping Prototype Portal.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite tapped Treasure Vault tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Prototype Portal must be on the battlefield
  - Clock of Omens must be on the battlefield
  - Battered Golem must be on the battlefield
  - Treasure Vault must be exiled
[END OF COMBO PREREQUISITES]
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