How can you create a combo with Mythos of Illuna, Radiate, Spark Double, Tamiyo, Collector of Tales?
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[START OF COMBO]This combo can be formed with Mythos of Illuna, Radiate, Spark Double, Tamiyo, Collector of Tales

Color identity: GUR
Mana cost: {5}{U}{U}{R}{R}
Steps:
  1. Cast Mythos of Illuna by paying {2}{U}{U}, targeting anything.
  2. In response, cast Radiate by paying {3}{R}{R}, creating copies of Mythos of Illuna that target each permanent besides the original target.
  3. Resolve all copies of Mythos of Illuna including the original, creating token copies of each permanent.
  4. Activate a copy of Tamiyo by removing three loyalty counters from it, returning Radiate from your graveyard to your hand.
  5. Activate another copy of Tamiyo by removing three loyalty counters from it, returning Mythos of Illuna from your graveyard to your hand.
  6. Activate the token lands or other mana-producing permanents created in step 3 by tapping them, adding at least {5}{U}{U}{R}{R}.
  7. Repeat, doubling the number of copies created in step 3 each repetition.
  8. Once you have infinite nonlegendary copies of Tamiyo, you may activate Tamiyo abilities any number of times.[END OF COMBO STEPS]

Result:
  - Draw one in four cards in your library
  - Infinite copies of all permanents
  - Infinite magecraft triggers
  - Infinite mana permanents on the battlefield can produce
  - Infinite self-mill
  - Infinite storm count
  - Return all cards from your graveyard to your hand[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Mythos of Illuna must be in your hand
  - Radiate must be in your hand
  - Spark Double must be on the battlefield
  - Tamiyo, Collector of Tales must be in your hand or on the battlefield or in the command zone or exiled or in the graveyard or in the library
  - Spark Double is a copy of Tamiyo.
  - At least four loyalty counters on Spark Double.
  - There are permanents on the battlefield that enter the battlefield untapped and produce at least {5}{U}{U}{R}{R}.
[END OF COMBO PREREQUISITES]
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