Zimone, Quandrix Prodigy + Retreat to Coralhelm + Selesnya Sanctuary + The Wandering Minstrel
Zimone, Quandrix Prodigy
Retreat to Coralhelm
Selesnya Sanctuary
The Wandering Minstrel
Infinite green manaInfinite landfall triggersInfinite white mana
How it works
Activate Zimone's first ability by paying 1 and tapping it, putting Selesnya Sanctuary from your hand onto the battlefield untapped due to The Wandering Minstrel.
When Selesnya Sanctuary enters the battlefield, it and Retreat to Coralhelm trigger.
Holding priority, activate Selesnya Sanctuary by tapping it, adding .
Resolve the Selesnya Sanctuary trigger from step 2, returning itself from the battlefield to your hand.
Resolve the Retreat to Coralhelm trigger, untapping Zimone.