How can you create a combo with Prossh, Skyraider of Kher, Earthcraft, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Prossh, Skyraider of Kher, Earthcraft, Phyrexian Altar

Color identity: BRG
Mana cost: {3} plus enough mana to pay for commander tax, if applicable.
Steps:
  1. Activate a basic Swamp, Mountain and Forest by tapping them, adding {B}{R}{G}.
  2. Cast Prossh from the command zone by paying {3}{B}{R}{G} plus commander tax, if applicable.
  3. Prossh triggers, creating a number of 0/1 Kobolds of Kher Keep tokens equal to the amount of mana spent to cast Prossh.
  4. Activate Earthcraft three times by tapping two Kobolds of Kher Keep tokens and Prossh, untapping a basic Swamp, Mountain and Forest.
  5. Activate Phyrexian Altar by sacrificing Prossh, adding {C}{C}.
  6. Choose to return Prossh from your graveyard to the command zone.
  7. Activate Phyrexian Altar by sacrificing a Kobolds of Kher Keep token, adding {C}{C}.
  8. Repeat step 7 until you have enough mana to cast Prossh.
  9. Repeat from step 1.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite commander casts
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinitely powerful Prossh until end of turn
  - Infinite sacrifice triggers
  - Infinite storm count
  - Infinite untap of basic lands you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Prossh, Skyraider of Kher must be in the command zone
  - Earthcraft must be on the battlefield
  - Phyrexian Altar must be on the battlefield
  - You control at least one basic Swamp, Mountain and Forest.
[END OF COMBO PREREQUISITES]
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