Mythos of Illuna + Radiate + Spark Double + Tamiyo, Collector of Tales

Mana needed: {5}{U}{U}{R}{R}

GUR identity

Commander legal

The 4 combo pieces

What must be in place

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}.

How to execute it

  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.

What the combo produces