How can you create a combo with Grinning Ignus, Runaway Steam-Kin?
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[START OF COMBO]This combo can be formed with Grinning Ignus, Runaway Steam-Kin

Color identity: R
Mana cost: {2}{R} plus an additional amount of {R} available equal to three minus the number of +1/+1 counters on Runaway Steam-Kin
Steps:
  1. If Runaway Steam-Kin has three or more +1/+1 counters on it, activate it by removing three +1/+1 counters from it, adding {R}{R}{R}.
  2. Cast Grinning Ignus by paying {2}{R}.
  3. Runaway Steam-Kin triggers, putting a +1/+1 counter on it.
  4. Activate Grinning Ignus by paying {R} and returning it from the battlefield to your hand, adding {C}{C}{R}.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Grinning Ignus must be in your hand
  - Runaway Steam-Kin must be on the battlefield
[END OF COMBO PREREQUISITES]
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