How can you create a combo with Blossoming Tortoise, Dryad Arbor, Infinite Reflection, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Blossoming Tortoise, Dryad Arbor, Infinite Reflection, Ashnod's Altar

Color identity: GU
Mana cost: 
Steps:
  1. Play Dryad Arbor.
  2. When Dryad Arbor enters the battlefield as a copy of Blossoming Tortoise due to Infinite Reflection, it triggers.
  3. Holding priority, activate Ashnod's Altar by sacrificing Dryad Arbor, adding {C}{C}.
  4. Resolve the Dryad Arbor trigger from step 2, causing you to mill three cards and return Dryad Arbor from your graveyard to the battlefield.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Blossoming Tortoise must be on the battlefield
  - Dryad Arbor must be in your hand
  - Infinite Reflection must be on the battlefield
  - Ashnod's Altar must be on the battlefield
  - Infinite Reflection attached to Blossoming Tortoise.
[END OF COMBO PREREQUISITES]
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