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

Color identity: BGU
Mana cost: 
Steps:
  1. Activate a basic Forest by tapping it, adding {G}.
  2. Activate Squandered Resources by sacrificing a basic Forest, adding {G}.
  3. Activate Groundskeeper by paying {1}{G}, causing you to put the basic Forest from your graveyard into your hand.
  4. Activate Skyshroud Ranger by tapping it, putting the basic Forest onto the battlefield from your hand.
  5. The Forest enters the battlefield, triggering Retreat to Coralhelm, untapping Skyshroud Ranger.
  6. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - Skyshroud Ranger does not have summoning sickness.
  - You control a basic Forest.
[END OF COMBO PREREQUISITES]
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