Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Llanowar Scout + Dimir Aqueduct

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Llanowar Scout

Dimir Aqueduct

How it works

1. Activate Llanowar Scout by tapping it, putting Dimir Aqueduct from your hand onto the battlefield.
2. When Dimir Aqueduct enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Dimir Aqueduct 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.