Dargo, the Shipwrecker, Gwenna, Eyes of Gaea, and Ashnod's Altar

Prerequisites

• Dargo, the Shipwrecker in the command zone
• Gwenna, Eyes of Gaea on the battlefield
• Ashnod's Altar 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

Steps

1. Activate Gwenna by tapping it, adding that can only be spent to cast creature spells or to activate abilities of creatures
2. Cast Dargo from the command zone by paying
3. Gwenna triggers, putting a +1/+1 counter on it and untapping itself
4. Activate Ashnod's Altar by sacrificing Dargo, adding
5. Choose to return Dargo to the command zone from your graveyard
6. Repeat

Results

• 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 colorless mana
• Infinite commander casts
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count