How can you create a combo with Grinning Ignus, Twinning Glass, Merrow Reejerey, Arcane Adaptation?
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[START OF COMBO]This combo can be formed with Grinning Ignus, Twinning Glass, Merrow Reejerey, Arcane Adaptation

Color identity: UR
Mana cost: {2}{R}{R}
Steps:
  1. Cast Grinning Ignus by paying {2}{R}.
  2. Merrow Reejerey triggers, untapping Twinning Glass.
  3. Activate Grinning Ignus by paying {R} and returning it to your hand from the battlefield, adding {C}{C}{R}.
  4. Activate Twinning Glass by paying {1} and tapping it, causing you to cast Grinning Ignus without paying its mana cost.
  5. Repeat from step 2.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - "Merfolk" chosen with Arcane Adaptation.
[END OF COMBO PREREQUISITES]
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