Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Whitemane Lion + Boros Garrison

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Whitemane Lion

Boros Garrison

How it works

1. Activate Boros Garrison by tapping it, adding
2. Cast Whitemane Lion by paying its mana cost.
3. When Whitemane Lion enters as a land due to Ashaya, it and Stone-Seeder Hierophant trigger.
4. Resolve the Whitemane Lion trigger, returning it from your graveyard to the battlefield.
5. Resolve the Stone-Seeder Hierophant trigger, untapping it.
6. Activate Stone-Seeder Hierophant by tapping it, untapping Boros Garrison.
7. Repeat.