Zimone, Quandrix Prodigy, Retreat to Coralhelm, Tiller Engine, and Selesnya Sanctuary

Prerequisites

• Zimone, Quandrix Prodigy on the battlefield
• Retreat to Coralhelm on the battlefield
• Tiller Engine on the battlefield
• Selesnya Sanctuary in hand
• available

Steps

1. Activate Zimone's first ability by paying and tapping it, putting Selesnya Sanctuary from your hand onto the battlefield untapped due to When Selesnya Sanctuary enters the battlefield, it, Tiller Engine and Retreat to Coralhelm trigger
2. Resolve the Tiller Engine trigger, untapping Selesnya Sanctuary Holding priority, activate Selesnya Sanctuary by tapping it, adding
3. Resolve the Selesnya Sanctuary trigger from step 2, returning itself from the battlefield to your hand
4. Resolve the Retreat to Coralhelm trigger, untapping Zimone
5. Repeat

Results

• Infinite green mana
• Infinite landfall triggers
• Infinite white mana