Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Sakura-Tribe Scout + Boros Garrison

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Sakura-Tribe Scout

Boros Garrison

How it works

1. Activate Sakura-Tribe Scout by tapping it, putting Boros Garrison from your hand onto the battlefield.
2. When Boros Garrison enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Boros Garrison trigger, returning it from the battlefield to your hand.
4. Resolve the Stone-Seeder Hierophant trigger, untapping it.
5. Activate Stone-Seeder Hierophant by tapping it, untapping Sakura-Tribe Scout as it is a land due to Ashaya.
6. Repeat.