Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Oboro, Palace in the Clouds + PuPu UFO

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Oboro, Palace in the Clouds

PuPu UFO

How it works

1. Activate PuPu UFO's first activated ability by tapping it, putting Oboro, Palace in the Clouds from your hand onto the battlefield.
2. When Oboro, Palace in the Clouds enters, Stone-Seeder Hierophant triggers.
3. In response, activate Oboro's first ability by tapping it, adding .
4. Activate Oboro's last ability by paying 1, returning it from the battlefield to your hand.
5. Resolve the Stone-Seeder Hierophant trigger, untapping it.
6. Activate Stone-Seeder Hierophant by tapping it, untapping PuPu UFO as it is a land due to Ashaya.
7. Repeat.

This clever loop relies on Ashaya, Soul of the Wild to turn every creature into a Forest land, allowing Stone-Seeder Hierophant to untap any land whenever another land enters the battlefield. You use PuPu UFO to cheat Oboro, Palace in the Clouds directly into play from your hand, which triggers the Hierophant. By tapping Oboro for blue mana before bouncing it back to your hand with its own ability, and using the Hierophant to untap the UFO, you create a self-sustaining loop that generates infinite landfall triggers.