Nested Ghoul + Intruder Alarm + Brawl

Nested Ghoul

Intruder Alarm

Brawl

How it works

1. Cast Brawl by paying 3.
2. Give Nested Ghoul indestructible, if needed.
3. Activate Nested Ghoul by tapping it, dealing damage equal to its power to itself.
4. Nested Ghoul triggers, creating a 2/2 Phyrexian Zombie creature token.
5. When the Phyrexian Zombie enters the battlefield, Intruder Alarm triggers, untapping all creatures.
6. Repeat from step 3.

By casting Brawl, you grant every creature on the board the ability to ping anything for damage equal to its power, transforming your battlefield into a firing squad. This turns Nested Ghoul's self-inflicted damage into a literal token generator, because whenever it damages itself, it creates a 2/2 Phyrexian Zombie creature token. Every single time that zombie enters the battlefield, Intruder Alarm triggers to untap all creatures—including the Ghoul itself—allowing you to tap it over and over again to loop the entire process for an endless army of tokens.