Wight of the Reliquary + Intruder Alarm + Rampaging Baloths

Wight of the Reliquary

Intruder Alarm

Rampaging Baloths

How it works

1. Activate Wight of the Reliquary by tapping it and sacrificing another creature, causing you to search your library for a land card and put it onto the battlefield tapped.
2. When the land enters the battlefield, Rampaging Baloths triggers, creating a 4/4 Beast creature token.
3. When the creature token enters the battlefield, Intruder Alarm triggers, untapping all creatures.
4. Repeat.

This loop relies on an elegant feedback loop between creature production and land tutoring: whenever you sacrifice a creature to Wight of the Reliquary to pull a land from your library, Rampaging Baloths rewards you with a fresh 4/4 Beast token via landfall. That newly arriving token immediately triggers Intruder Alarm, which ignores normal untap steps to instead untap all creatures—including Wight of the Reliquary—allowing you to start the process all over again. As long as you have a creature to feed to the Wight, this combination will empty your library of every single land and flood the board with an endless army of Beasts.