Scaretiller + Retreat to Coralhelm + Cabaretti Courtyard

Prerequisites

• Scaretiller is untapped.
• You have a basic Forest, Plains or Mountain in library.

Steps

1. 1Play Cabaretti Courtyard.
2. 2Cabaretti Courtyard enters the battlefield, triggering itself and Retreat to Coralhelm.
3. 3Resolve the Cabaretti Courtyard trigger, causing you to sacrifice it, then search your library for a basic Forest, Plains or Mountain card, put it onto the battlefield tapped, and gain 1 life.
4. 4The basic land enters the battlefield, triggering Retreat to Coralhelm, tapping Scaretiller.
5. 5Scaretiller triggers, returning Cabaretti Courtyard from your graveyard to the battlefield tapped.
6. 6Cabaretti Courtyard enters the battlefield, triggering itself and Retreat to Coralhelm.
7. 7Resolve the Retreat to Coralhelm trigger, untapping Scaretiller.
8. 8Repeat from step 3.

Effects

• Near-infinite landfall triggers
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Put all basic Forests, Mountains, and Plains from your library onto the battlefield tapped