Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Skyshroud Ranger + Izzet Boilerworks

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Skyshroud Ranger

Izzet Boilerworks

How it works

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