How can you create a combo with Aeve, Progenitor Ooze, Ashnod's Altar, Urn of Godfire?
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[START OF COMBO]This combo can be formed with Aeve, Progenitor Ooze, Ashnod's Altar, Urn of Godfire

Color identity: G
Mana cost: {2}{G}{G}{G} plus enough mana to pay for commander tax, if applicable
Steps:
  1. Cast Aeve from the command zone by paying {2}{G}{G}{G} plus commander tax, if applicable.
  2. Aeve's storm ability triggers, creating a nonlegendary token copy of itself for each spell you've cast previously this turn.
  3. Activate Ashnod's Altar three times by sacrificing the nontoken Aeve and two Aeve tokens, adding six {C}.
  4. Choose to have Aeve returned to the command zone from your graveyard.
  5. Activate Urn of Godfire's first ability three times by paying {6}, adding {G}{G}{G}.
  6. Activate Ashnod's Altar by sacrificing an Aeve token, adding {C}{C}.
  7. Repeat step 6 until you have enough mana to cast Aeve.
  8. Repeat from step 1.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters
  - Infinite colored mana
  - Infinite colorless mana
  - Infinite commander casts
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Aeve, Progenitor Ooze must be in the command zone
  - Ashnod's Altar must be on the battlefield
  - Urn of Godfire must be on the battlefield
  - Your storm count is equal to or higher than five plus the number of times you've cast Aeve from the command zone this game.
[END OF COMBO PREREQUISITES]
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