Vesperlark + Activated Sleeper + Viscera Seer

Vesperlark

Activated Sleeper

Viscera Seer

How it works

1. Activate Viscera Seer by sacrificing Vesperlark.
2. When Vesperlark dies, it triggers, returning Activated Sleeper from your graveyard to the battlefield as a copy of Vesperlark.
3. Activate Viscera Seer by sacrificing Activated Sleeper.
4. When Activated Sleeper dies, it triggers, returning Activated Sleeper from your graveyard to the battlefield as a copy of Vesperlark.
5. Resolve the Viscera Seer ability, causing you to scry 1.
6. Repeat from step 3.

This elegant loop relies on an infinite recursion between Vesperlark and Activated Sleeper, fueled by the sacrifice outlet provided by Viscera Seer. Because Activated Sleeper can enter as a copy of the dying Vesperlark, its own leaves-the-battlefield trigger keeps resurrecting it from the graveyard every time Viscera Seer puts it in the dirt. This endless cycle generates infinite death, entry, and sacrifice triggers, letting you scour your entire deck with endless scry 1 activations.