Dr. Madison Li + Intruder Alarm + Robobrain War Mind + Sarcatog

Dr. Madison Li

Intruder Alarm

Robobrain War Mind

Sarcatog

How it works

1. Cast Robobrain War Mind by paying 3.
2. When Robobrain War Mind enters, it and Intruder Alarm trigger.
3. Resolve the Robobrain War Mind trigger, causing you to get E for each artifact creature you control.
4. Resolve the Intruder Alarm trigger, untapping all creatures.
5. Activate Sarcatog by sacrificing Robobrain War Mind.
6. Activate Dr. Madison Li by tapping it and paying EEEEE, returning Robobrain War Mind from your graveyard to the battlefield.
7. Repeat from step 2.

This clever loop turns Robobrain War Mind into an infinite recursion engine by capitalizing on Intruder Alarm's static ability, which untaps all creatures whenever a new one enters the battlefield. As Robobrain War Mind enters, its own entry trigger supplies the necessary energy counters, which Dr. Madison Li eagerly consumes to resurrect the war mind from the graveyard whenever Sarcatog feeds it away as a sacrifice. Because every single loop causes a fresh entry that triggers Intruder Alarm to untap Dr. Madison Li, you can endlessly recycle your artifacts to generate a staggering surplus of triggers and resources.