How can you create a combo with Medomai the Ageless, Metamorphic Alteration, Mistmeadow Vanisher?
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[START OF COMBO]This combo can be formed with Medomai the Ageless, Metamorphic Alteration, Mistmeadow Vanisher

Color identity: WU
Mana cost: {1}{U} the first turn
Steps:
  1. Cast Metamorphic Alteration by paying {1}{U}, attaching it to Medomai, naming Mistmeadow Vanisher and causing Medomai to become a copy of Mistmeadow Vanisher.
  2. Declare Medomai as an attacker.
  3. Medomai triggers, exiling Metamorphic Alteration until your end step.
  4. When Metamorphic Alteration leaves the battlefield, Medomai is no longer a copy of Mistmeadow Vanisher.
  5. Deal combat damage using Medomai.
  6. Medomai triggers, causing you to take an extra turn after this one.
  7. At the beginning of your end step, Medomai triggers, returning Metamorphic Alteration to the battlefield from exile attached it to Medomai, naming Mistmeadow Vanisher and causing Medomai to become a copy of Mistmeadow Vanisher.
  8. Repeat from step 2 each turn.[END OF COMBO STEPS]

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

Other prerequisites:
  - Medomai the Ageless must be on the battlefield
  - Metamorphic Alteration must be in your hand
  - Mistmeadow Vanisher must be on the battlefield
  - An opponent cannot block Medomai.
[END OF COMBO PREREQUISITES]
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