Battered Golem + Clock of Omens + Prototype Portal + Treasure Vault

C identity

Commander legal

The 4 combo pieces

How to execute it

  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.

What the combo produces