How can you create a combo with Didgeridoo, Cloudstone Curio, Mana Echoes?
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[START OF COMBO]This combo can be formed with Didgeridoo, Cloudstone Curio, Mana Echoes

Color identity: R
Mana cost: 
Steps:
  1. Activate Didgeridoo by paying {3}, putting any nonartifact Minotaur from your hand onto the battlefield.
  2. The Minotaur enters the battlefield, triggering Cloudstone Curio and Mana Echoes.
  3. Resolve the Mana Echoes trigger, adding {C} for each Minotaur you control.
  4. Resolve the Cloudstone Curio trigger, returning any other nontoken, nonartifact Minotaur from the battlefield to your hand.
  5. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - You have a nonartifact Minotaur creature card in hand.
  - You control at least three Minotaurs, one of which must be a nontoken, nonartifact creature.
[END OF COMBO PREREQUISITES]
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