Emeria Shepherd + World Shaper + Blasting Station + Trenching Steed

Emeria Shepherd

World Shaper

Blasting Station

Trenching Steed

How it works

1. Activate Trenching Steed by sacrificing a land.
2. Repeat step 1 until you control no lands.
3. Activate Blasting Station by tapping it and sacrificing World Shaper.
4. When World Shaper dies, it triggers, return all lands from your graveyard to the battlefield tapped.
5. When the lands enter, Emeria Shepherd triggers that many times.
6. Resolve an Emeria Shepherd trigger that was triggered by a Plains, returning World Shaper from your graveyard to the battlefield.
7. When World Shaper enters, Blasting Station triggers, untapping Blasting Station.
8. Resolve all remaining Emeria Shepherd triggers.
9. Resolve the Blasting Station ability from step 3.
10. Repeat

This intricate loop transforms the self-sacrificing land-eating of Trenching Steed into an engine of relentless resurrection. By feeding World Shaper to Blasting Station, you trigger World Shaper's death ability to flood the battlefield with all the lands you just discarded, which in turn causes Emeria Shepherd's landfall ability to pull World Shaper right back out of the graveyard. Because Blasting Station happily untaps whenever a creature enters the battlefield, you can repeat this cycle indefinitely to blast your opponents out of the game while recycling your entire graveyard.