Zimone, Quandrix Prodigy, Retreat to Coralhelm, Spelunking, and Gruul Turf

Prerequisites

• Zimone, Quandrix Prodigy on the battlefield
• Retreat to Coralhelm on the battlefield
• Spelunking on the battlefield
• Gruul Turf in hand
• available

Steps

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

Results

• Infinite red mana
• Infinite green mana
• Infinite landfall triggers