How can you create a combo with Filigree Sages, Prototype Portal, Mistvault Bridge, Tiller Engine, Biomancer's Familiar?
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[START OF COMBO]This combo can be formed with Filigree Sages, Prototype Portal, Mistvault Bridge, Tiller Engine, Biomancer's Familiar

Color identity: BGU
Mana cost: 
Steps:
  1. Activate Prototype Portal by paying {0} and tapping it, creating a token copy of Mistvault Bridge.
  2. When Mistvault Bridge enters the battlefield, Tiller Engine triggers, untapping it.
  3. Activate the Mistvault Bridge token by tapping it, adding {U}.
  4. Activate Filigree Sages by paying {U}, untapping Prototype Portal.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite tapped Mistvault Bridge tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Filigree Sages must be on the battlefield
  - Prototype Portal must be on the battlefield
  - Mistvault Bridge must be exiled
  - Tiller Engine must be on the battlefield
  - Biomancer's Familiar must be on the battlefield
[END OF COMBO PREREQUISITES]
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