How can you create a combo with Medomai the Ageless, Idris, Soul of the TARDIS, Thrummingbird, Encroaching Mycosynth?
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[START OF COMBO]This combo can be formed with Medomai the Ageless, Idris, Soul of the TARDIS, Thrummingbird, Encroaching Mycosynth

Color identity: URW
Mana cost: {1}{U}{R}
Steps:
  1. Deal combat damage to an opponent using Medomai the Ageless.
  2. Medomai the Ageless triggers, causing you to take an extra turn after this one.
  3. Cast Idris by paying {1}{U}{R}.
  4. When Idris enters the battlefield, it triggers, exiling Medomai the Ageless until Idris leaves the battlefield.
  5. Move to your extra turn.
  6. At the beginning of your upkeep, Idris's vanishing ability triggers, removing a time counter from it.
  7. Deal combat damage to an opponent using Idris and Thrummingbird.
  8. Idris and Thrummingbird trigger.
  9. Resolve the Idris trigger, causing you to take an extra turn after this one.
  10. Resolve the Thrummingbird trigger, putting a time counter on Idris.
  11. Repeat from step 5.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Medomai the Ageless must be on the battlefield
  - Idris, Soul of the TARDIS must be in your hand
  - Thrummingbird must be on the battlefield
  - Encroaching Mycosynth must be on the battlefield
  - An opponent cannot block creatures you control.
[END OF COMBO PREREQUISITES]
assistant