Emeria Shepherd + Aftermath Analyst + Archelos, Lagoon Mystic + Coastal Hornclaw

Emeria Shepherd

Aftermath Analyst

Archelos, Lagoon Mystic

Coastal Hornclaw

How it works

1. Activate any number of lands by tapping them, adding at least 3.
2. Activate Coastal Hornclaw by sacrificing a land.
3. Repeat step 2 until you control no lands.
4. Activate Aftermath Analyst by paying 3 and sacrificing it, returning all lands from your graveyard to the battlefield untapped due to Archelos.
5. When the lands enter, Emeria Shepherd triggers that many times.
6. Resolve an Emeria Shepherd trigger that was triggered by a Plains, returning Aftermath Analyst from your graveyard to the battlefield.
7. Resolve all other Emeria Shepherd triggers, returning any number of nonland permanents from your graveyard to either your hand or the battlefield.
8. Repeat.

This loop turns your graveyard into an entire engine of recursion by weaponizing a self-sustaining cycle of land sacrifice and mass return. You begin by feeding your lands to Coastal Hornclaw until your entire board is cleared of them, which sends Aftermath Analyst and any other valuable tools straight to your graveyard. Once you crack Aftermath Analyst's sacrifice ability using the mana you gathered, it returns every single land from your graveyard directly to the battlefield simultaneously. Because Archelos, Lagoon Mystic is currently untapped, those lands bypass their usual delays and enter the battlefield untapped, instantly triggering Emeria Shepherd a multitude of times. A single Plains among those returning lands lets you pull Aftermath Analyst right back out of the graveyard to hand, while the rest of the triggers let Emeria Shepherd fish out any nonland permanents you desire—setting the stage to repeat the entire process indefinitely.