Emeria Shepherd + World Shaper + Viscera Seer + Coastal Hornclaw

Emeria Shepherd

World Shaper

Viscera Seer

Coastal Hornclaw

How it works

1. Activate Coastal Hornclaw by sacrificing a land.
2. Repeat step 1 until you control no lands.
3. Activate Viscera Seer by 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. Resolve all remaining Emeria Shepherd triggers.
8. Resolve the Viscera Seer ability.
9. Repeat

This clever engine turns a tragic cycle of sacrifice into an unstoppable recycling plant by using Coastal Hornclaw to strip away your own lands until you control none. Once the battlefield is clear, you can sacrifice World Shaper to Viscera Seer to trigger World Shaper's death ability, which floods the board with all those fallen lands at once. That mass arrival massively triggers Emeria Shepherd, whose landfall ability takes advantage of the entering Plains to instantly fish World Shaper right back out of your graveyard and onto the battlefield, ready to be sacrificed all over again.