Toph, the First Metalbender, Retreat to Emeria, Haru, Hidden Talent, and Horn of Ramos

Prerequisites

• Toph, the First Metalbender on the battlefield
• Retreat to Emeria on the battlefield
• Haru, Hidden Talent on the battlefield
• Horn of Ramos in hand
• available

Steps

1. Cast Horn of Ramos by paying its mana cost
2. When Horn of Ramos enters, Retreat to Emeria triggers, creating a 1/1 Kor Ally creature token
3. When the Kor Ally enters, Haru triggers, earthbending Horn of Ramos
4. Activate Horn of Ramos by sacrificing it
5. Haru triggers, returning Horn of Ramos from your graveyard to the battlefield
6. Repeat from step 2

Results

• Infinite ETB
• Infinite creature tokens
• Infinite green mana
• Infinite landfall triggers