How can you create a combo with Dargo, the Shipwrecker, Gwenna, Eyes of Gaea, Altar of Dementia?
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[START OF COMBO]This combo can be formed with Dargo, the Shipwrecker, Gwenna, Eyes of Gaea, Altar of Dementia

Color identity: RG
Mana cost: 
Steps:
  1. Activate Gwenna by tapping it, adding {1}{R} that can only be spent to cast creature spells or to activate abilities of creatures.
  2. Cast Dargo from the command zone by paying {R}.
  3. Gwenna triggers, putting a +1/+1 counter on it and untapping itself.
  4. Activate Altar of Dementia by sacrificing Dargo.
  5. Choose to return Dargo to the command zone from your graveyard.
  6. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Dargo's power.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Gwenna
  - Infinite colored mana that can only be spent to activate abilities of creatures
  - Infinite colored mana that can only be spent to cast creature spells
  - Infinite commander casts
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite self-mill
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Dargo, the Shipwrecker must be in the command zone
  - Gwenna, Eyes of Gaea must be on the battlefield
  - Altar of Dementia must be on the battlefield
  - Gwenna does not have summoning sickness.
  - You have sacrificed at least three artifacts and/or creatures this turn, plus an additional artifact or creature for each time you've cast Dargo from the command zone this game.
[END OF COMBO PREREQUISITES]
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