Ashaya, Soul of the Wild, Stone-Seeder Hierophant, Scaretiller, and Terramorphic Expanse

Prerequisites

• Ashaya, Soul of the Wild on the battlefield
• Stone-Seeder Hierophant on the battlefield
• Scaretiller on the battlefield
• Terramorphic Expanse in hand

Steps

1. Play Terramorphic Expanse
2. Terramorphic Expanse enters the battlefield, triggering Stone-Seeder Hierophant, untapping it
3. Activate Stone-Seeder Hierophant by tapping it, untapping any land you control
4. Activate Terramorphic Expanse by tapping and sacrificing it, searching your library for a basic land and putting it onto the battlefield tapped
5. The basic land enters the battlefield, triggering Stone-Seeder Hierophant, untapping Stone-Seeder Hierophant
6. Activate Stone-Seeder Hierophant by tapping it, untapping Scaretiller
7. Activate Scaretiller by tapping it, adding
8. Scaretiller triggers, returning Terramorphic Expanse from your graveyard to the battlefield tapped
9. Repeat from step 2

Results

• Near-infinite landfall triggers
• Near-infinite mana lands you control can produce
• Put all basic lands from your library onto the battlefield