How can you create a combo with Medomai the Ageless, Triton Shorestalker, Sakashima's Student, Crystal Shard, Mirror Gallery?
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[START OF COMBO]This combo can be formed with Medomai the Ageless, Triton Shorestalker, Sakashima's Student, Crystal Shard, Mirror Gallery

Color identity: WU
Mana cost: {1}{U}{U}{U}
Steps:
  1. Attack with Triton Shorestalker and when it isn't blocked, cast Sakashima's Student's for it's ninjutsu cost, paying {1}{U} and returning Triton Shorestalker to hand.
  2. Have Sakashima's Student enter the battlefield as a copy of Medomai the Ageless and deal combat damage, gaining you an extra turn.
  3. During your second main phase, cast Triton Shorestalker for {U}.
  4. Return Sakashima's Student to your hand with Crystal Shard for {U}.
  5. Pass the turn to yourself and repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - Medomai the Ageless must be on the battlefield
  - Triton Shorestalker must be on the battlefield
  - Sakashima's Student must be in your hand
  - Crystal Shard must be on the battlefield
  - Mirror Gallery must be on the battlefield
  - Triton Shorestalker does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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