Retreat to Emeria + Haru, Hidden Talent + Treva's Ruins

Retreat to Emeria

Haru, Hidden Talent

Treva's Ruins

How it works

1. Play Treva's Ruins.
2. When Treva's Ruins 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 Treva's Ruins.
5. Resolve the Treva's Ruins trigger from step 2, causing you to sacrifice it
6. Haru triggers, returning Treva's Ruins from your graveyard to the battlefield.
7. Repeat from step 2.

This clever loop turns Treva's Ruins's own drawback into an engine, using its self-sacrifice trigger alongside Retreat to Emeria's landfall ability to continuously churn out 1/1 Kor Ally tokens. Each time a token arrives, Haru, Hidden Talent triggers to earthbend the land, turning it into a creature and ensuring that when Treva's Ruins is sacrificed to its own trigger, Haru's replacement-style return clause instantly brings it right back to the battlefield to restart the cycle.