Technomancer + Umbral Collar Zealot + Auton Soldier

Technomancer

Umbral Collar Zealot

Auton Soldier

How it works

1. Cast Technomancer by paying 5.
2. When Technomancer enters, it triggers, causing you to mill three cards and return Auton Soldier from your graveyard to the battlefield as a copy of Technomancer.
3. When Auton Soldier enters, it triggers. Holding priority, activate Umbral Collar Zealot by sacrificing Auton Soldier.
4. Resolve the Auton Soldier trigger, causing you to mill three cards and return Auton Soldier from your graveyard to the battlefield as a copy of Technomancer.
5. Repeat from step 3.

This loop sets up an endless cycle of resurrection by leveraging Technomancer's entry ability to repeatedly pull Auton Soldier straight out of your graveyard. Because Auton Soldier enters as a copy of Technomancer, it immediately triggers to mill cards and recur itself again, turning the graveyard into a revolving door of artifact creatures. Meanwhile, Umbral Collar Zealot stands ready to sacrifice the freshly entered copy in response, ensuring the loop can be instantly reset while fueling your graveyard with continuous surveil triggers.