How can you create a combo with Zinnia, Valley's Voice, Cloudstone Curio, Great Whale?
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[START OF COMBO]This combo can be formed with Zinnia, Valley's Voice, Cloudstone Curio, Great Whale

Color identity: URW
Mana cost: {3}{U} at most
Steps:
  1. Activate up to seven lands by tapping them, adding at least {4}{U}.
  2. Cast Great Whale by paying {5}{U}{U} plus an additional {2} for its offspring cost.
  3. When Great Whale enters the battlefield, it triggers twice and Cloudstone Curio triggers once.
  4. Resolve the Cloudstone Curio trigger, returning nothing to your hand.
  5. Resolve the first Great Whale trigger, untapping up to seven lands.
  6. Holding priority, activate up to seven lands by tapping them, adding at least {4}{U}.
  7. Resolve the second Great Whale trigger, creating a token copy of it that is 1/1.
  8. When the Great Whale token enters the battlefield, it and Cloudstone Curio trigger.
  9. Resolve the Cloudstone Curio trigger, returning the nontoken Great Whale from the battlefield to your hand.
  10. Resolve the Great Whale token's trigger, untapping up to seven lands.
  11. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite storm count
  - Infinite creature tokens
  - Infinite mana lands you control can produce
  - Infinite untap of lands you control
  - Infinitely powerful Zinnia[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Zinnia, Valley's Voice must be on the battlefield
  - Cloudstone Curio must be on the battlefield
  - Great Whale must be in your hand
  - You control up to seven lands that can tap to produce at least {4}{U}.
[END OF COMBO PREREQUISITES]
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