Rootpath Purifier, Wheel of Sun and Moon, Terramorphic Expanse, and Stone-Seeder Hierophant

Prerequisites

• Rootpath Purifier on the battlefield
• Wheel of Sun and Moon on the battlefield
• Terramorphic Expanse on the battlefield
• Stone-Seeder Hierophant on the battlefield
• Wheel of Sun and Moon enchanting you
• Stone-Seeder Hierophant does not have summoning sickness

Steps

1. Activate Terramorphic Expanse by tapping and sacrificing it
2. Terramorphic Expanse is put on the bottom of your library instead of in your graveyard due to Wheel of Sun and Moon
3. Resolve the Terramorphic Expanse ability, searching your library for Terramorphic Expanse and putting it onto the battlefield tapped
4. Terramorphic Expanse enters the battlefield, triggering Stone-Seeder Hierophant, untapping Stone-Seeder Hierophant
5. Activate Stone-Seeder Hierophant by tapping it, untapping Terramorphic Expanse
6. Repeat

Results

• Infinite landfall triggers