How can you create a combo with Archelos, Lagoon Mystic, Zimone, Quandrix Prodigy, Retreat to Coralhelm, Boros Garrison?
user
[START OF COMBO]This combo can be formed with Archelos, Lagoon Mystic, Zimone, Quandrix Prodigy, Retreat to Coralhelm, Boros Garrison

Color identity: WUBRG
Mana cost: {1}
Steps:
  1. Activate Zimone's first ability by paying {1} and tapping it, putting Boros Garrison from your hand onto the battlefield untapped due to Archelos.
  2. Boros Garrison enters the battlefield, triggering itself and Retreat to Coralhelm.
  3. Activate Boros Garrison by tapping it, adding {R}{W}.
  4. Resolve the Boros Garrison trigger from step 2, returning itself from the battlefield to your hand.
  5. Resolve the Retreat to Coralhelm trigger, untapping Zimone.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite landfall triggers
  - Infinite red mana
  - Infinite white mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Archelos, Lagoon Mystic must be on the battlefield
  - Zimone, Quandrix Prodigy must be on the battlefield
  - Retreat to Coralhelm must be on the battlefield
  - Boros Garrison must be in your hand
  - Zimone does not have summoning sickness.
  - Archelos is untapped.
[END OF COMBO PREREQUISITES]
assistant