Haru, Hidden Talent, Retreat to Emeria, and Chain of Vapor

Prerequisites

• Haru, Hidden Talent on the battlefield
• Retreat to Emeria on the battlefield
• Chain of Vapor in hand
• available

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 a land you control
4. Cast Chain of Vapor by paying , causing you to return any nonland permanent you control except Haru or Retreat to Emeria from the battlefield to your hand, and then sacrifice an earthbent land to copy Chain of Vapor targeting another applicable permanent you control
5. The earthbent land triggers, returning itself 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 a land you control
8. Resolve Chain of Vapor, causing you to return the targeted permanent from the battlefield to your hand, and then sacrifice an earthbent land to copy Chain of Vapor targeting another applicable permanent you control
9. Repeat from step 4

Results

• Infinite LTB
• Infinite ETB
• Infinite magecraft triggers
• Infinite landfall triggers