Out of the Tombs + Leveler + Hapless Researcher

Out of the Tombs

Leveler

Hapless Researcher

How it works

1. Cast Leveler by paying 5.
2. When Leveler enters the battlefield, it triggers, exiling your library.
3. Activate Hapless Researcher by sacrificing it, causing you to return Hapless Researcher from your graveyard to the battlefield due to Out of the Tombs and discard a card.
4. Repeat step 3.

This clever loop relies on Leveler to instantly and permanently empty your library the moment it enters the battlefield, setting the stage for Out of the Tombs to turn your empty library replacement effect into a graveyard recursion engine. By cracking Hapless Researcher, you attempt to draw a card from a library with zero cards remaining, which Out of the Tombs happily intercepts to pull Hapless Researcher straight back from the graveyard to the battlefield instead of losing the game. Because Hapless Researcher enters the battlefield and can be immediately sacrificed again to repeat the process, you create an endless cycle of creature sacrifices, enters-the-battlefield triggers, and leaves-the-battlefield triggers.