Technomancer + Lithatog + Auton Soldier

Technomancer

Lithatog

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 Lithatog 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 clever loop relies on Technomancer's ability to pull artifact creatures with a total mana value of 6 or less straight from your graveyard upon entry, which conveniently matches the mana value of Auton Soldier. By letting Auton Soldier enter the battlefield as a copy of Technomancer, it triggers the exact same recursion effect to continuously loop itself out of the graveyard. While that self-sustaining cycle keeps repeating, you can sacrifice the cloning Auton Soldier to Lithatog's activation at instant speed to pump its stats while fueling the graveyard with a constant stream of artifact sacrifices and death triggers.