Retreat to Emeria, Haru, Hidden Talent, and Sylvan Safekeeper

Prerequisites

• Retreat to Emeria on the battlefield
• Haru, Hidden Talent on the battlefield
• Sylvan Safekeeper on the battlefield

Steps

1. Play a land
2. When the land enters, Retreat to Emeria triggers, creating a 1/1 Kor Ally creature token
3. When the Kor Ally enters, Haru triggers, earthbending the land that entered
4. Activate Sylvan Safekeeper by sacrificing the earthbended land
5. Haru triggers, returning the land from your graveyard to the battlefield tapped
6. When the land enters, Retreat to Emeria triggers, creating a 1/1 Kor Ally creature token
7. When the Kor Ally enters, Haru triggers, earthbending the land that entered
8. Repeat from step 4
9. Resolve all Sylvan Safekeeper abilities

Results

• Infinite ETB
• Infinite creature tokens
• Infinite landfall triggers