Zimone, Quandrix Prodigy + Retreat to Coralhelm + Spelunking + Selesnya Sanctuary

Zimone, Quandrix Prodigy

Retreat to Coralhelm

Spelunking

Selesnya Sanctuary

How it works

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