How it works
Prerequisites
- You have a land card in hand.
- You are able to play a land this turn.
- You control another nonland permanent.
Steps
- 1Play a land. When the land enters, Retreat to Emeria triggers, creating a 1/1 Kor Ally creature token.
- 2When the Kor Ally enters, Haru triggers, earthbending a land you control.
- 3Cast 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.
- 4The earthbent land triggers, returning itself from your graveyard to the battlefield tapped.
- 5When the land enters, Retreat to Emeria triggers, creating a 1/1 Kor Ally creature token.
- 6When the Kor Ally enters, Haru triggers, earthbending a land you control.
- 7Resolve 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.
- 8Repeat from step 4.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?