How can you create a combo with Retreat to Coralhelm, Skyshroud Ranger, Orzhov Basilica?
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[START OF COMBO]This combo can be formed with Retreat to Coralhelm, Skyshroud Ranger, Orzhov Basilica

Color identity: GWUB
Mana cost: 
Steps:
  1. Activate Skyshroud Ranger by tapping it, putting Orzhov Basilica from your hand onto the battlefield.
  2. Orzhov Basilica enters the battlefield, triggering itself and Retreat to Coralhelm.
  3. Resolve the Orzhov Basilica trigger, returning itself from the battlefield to your hand.
  4. Resolve the Retreat to Coralhelm trigger, untapping Skyshroud Ranger.
  5. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - Retreat to Coralhelm must be on the battlefield
  - Skyshroud Ranger must be on the battlefield
  - Orzhov Basilica must be in your hand
  - Skyshroud Ranger does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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