Vesperlark + Body Double + Shilgengar, Sire of Famine

Vesperlark

Body Double

Shilgengar, Sire of Famine

How it works

1. Activate Shilgengar by sacrificing Body Double.
2. When Body Double leaves the battlefield, its Vesperlark ability triggers, returning itself from your graveyard to the battlefield as a copy of Vesperlark.
3. Resolve the Shilgengar ability.
4. Repeat.

This loop relies on Body Double copying Vesperlark while it sits in the graveyard, entering the battlefield as a Vesperlark to leverage its leaves-the-battlefield trigger. Shilgengar, Sire of Famine provides the initial sacrifice outlet to send Body Double back to the graveyard, which simultaneously triggers Vesperlark's ability to pull Body Double right back out as a fresh copy. By cycling Body Double through this recursive loop, you generate an infinite stream of sacrifice triggers and Blood tokens to fuel any win condition you desire.