Zimone, Quandrix Prodigy, Retreat to Coralhelm, Stone-Seeder Hierophant, and Boros Garrison

Prerequisites

• Zimone, Quandrix Prodigy on the battlefield
• Retreat to Coralhelm on the battlefield
• Stone-Seeder Hierophant on the battlefield
• Boros Garrison in hand
• available

Steps

1. Activate Zimone's first ability by paying and tapping it, putting Boros Garrison from your hand onto the battlefield
2. When Boros Garrison enters the battlefield, it, Retreat to Coralhelm and Stone-Seeder Hierophant trigger Resolve the Stone-Seeder Hierophant trigger, untapping it
3. Holding priority, activate Stone-Seeder Hierophant by tapping it, untapping Boros Garrison
4. Activate Boros Garrison by tapping it, adding
5. Resolve the Boros Garrison trigger from step 2, returning it from the battlefield to your hand
6. Resolve the Retreat to Coralhelm trigger, untapping Zimone
7. Repeat

Results

• Infinite landfall triggers
• Infinite red mana
• Infinite mana lands you control can produce
• Infinite untap of lands you control
• Infinite white mana