How can you create a combo with Myr Propagator, Mana Echoes, Hammer of Purphoros?
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[START OF COMBO]This combo can be formed with Myr Propagator, Mana Echoes, Hammer of Purphoros

Color identity: R
Mana cost: {4} at most
Steps:
  1. Activate Myr Propagator by paying {3} and tapping it, creating a token copy of it.
  2. When the Myr Propagator token enters the battlefield, Mana Echoes triggers, adding {C} for each Myr you control.
  3. Repeat using the Myr Propagator token instead.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite enters the battlefield
  - Infinite tapped creature tokens[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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