Retreat to Emeria + Haru, Hidden Talent + Rith's Grove

Retreat to Emeria

Haru, Hidden Talent

Rith's Grove

How it works

1. Play Rith's Grove.
2. When Rith's Grove enters, it and Retreat to Emeria trigger.
3. Resolve the Retreat to Emeria trigger, creating a 1/1 Kor Ally creature token.
4. When the Kor Ally enters, Haru triggers, earthbending Rith's Grove.
5. Resolve the Rith's Grove trigger from step 2, causing you to sacrifice it
6. Haru triggers, returning Rith's Grove from your graveyard to the battlefield.
7. Repeat from step 2.

This loop creates an endless cycle of land and creature arrivals by turning Rith's Grove into a self-recycling engine. Every time Rith's Grove enters the battlefield, Retreat to Emeria triggers to spawn a 1/1 white Kor Ally creature token, which in turn triggers Haru, Hidden Talent to animate the land into a creature via earthbend 1. Because Rith's Grove's own entry trigger forces you to sacrifice it unless you bounce another land, the sacrifice requirement actually plays right into Haru, Hidden Talent's delayed return clause, bringing Rith's Grove straight back to the battlefield tapped to restart the whole sequence.