Retreat to Coralhelm + Sakura-Tribe Scout + Orzhov Basilica

Retreat to Coralhelm

Sakura-Tribe Scout

Orzhov Basilica

How it works

1. Activate Sakura-Tribe Scout by tapping it, putting Orzhov Basilica from your hand onto the battlefield.
2. When Orzhov Basilica enters the battlefield, it and Retreat to Coralhelm trigger.
3. Resolve the Orzhov Basilica trigger, returning itself from the battlefield to your hand.
4. Resolve the Retreat to Coralhelm trigger, untapping Sakura-Tribe Scout.
5. Repeat.