Retreat to Emeria, Haru, Hidden Talent, Strip Mine, and Stone-Seeder Hierophant

Prerequisites

• Retreat to Emeria on the battlefield
• Haru, Hidden Talent on the battlefield
• Strip Mine in hand
• Stone-Seeder Hierophant in hand

Steps

1. Play Strip Mine
2. When Strip Mine enters, Stone-Seeder Hierophant and Retreat to Emeria trigger
3. Resolve the Stone-Seeder Hierophant trigger, untapping it
4. Resolve the Retreat to Emeria trigger, creating a 1/1 Kor Ally creature token
5. When the Kor Ally enters, Haru triggers, earthbending Strip Mine
6. Activate Strip Mine's second ability by tapping and sacrificing it, targeting another land
7. Haru triggers, returning Strip Mine from your graveyard to the battlefield tapped
8. When Strip Mine enters, Retreat to Emeria and Stone-Seeder Hierophant trigger
9. Holding priority, activate Stone-Seeder Hierophant by tapping it, untapping Strip Mine
10. Repeat from step 3

Results

• Destroy all lands opponents control
• Destroy all lands that enter the battlefield under an opponent's control
• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers
• Lock
• Mass Land Denial
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control