Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Llanowar Scout + Gruul Turf

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Llanowar Scout

Gruul Turf

How it works

1. Activate Llanowar Scout by tapping it, putting Gruul Turf from your hand onto the battlefield.
2. When Gruul Turf enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Gruul Turf 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 Llanowar Scout as it is a land due to Ashaya.
6. Repeat.