Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Skyshroud Ranger + Rakdos Carnarium

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Skyshroud Ranger

Rakdos Carnarium

How it works

1. Activate Skyshroud Ranger by tapping it, putting Rakdos Carnarium from your hand onto the battlefield.
2. When Rakdos Carnarium enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Rakdos Carnarium 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.