Technomancer + Krark-Clan Ironworks + Auton Soldier

Technomancer

Krark-Clan Ironworks

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 Krark-Clan Ironworks 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 turns recursion into an engine by letting **Technomancer** and **Auton Soldier** endlessly trigger one another. When **Technomancer** enters the battlefield, its trigger lets you pull **Auton Soldier** straight from the graveyard, and because **Auton Soldier** enters as a copy of **Technomancer**, it immediately triggers to recur the loop again. **Krark-Clan Ironworks** plays a crucial role here as both the sacrifice outlet that feeds the cycle and the engine generating a massive pile of colorless mana with every iteration.