Cephalid Illusionist + Nomads en-Kor + Narcomoeba + Dread Return + Thassa's Oracle

Cephalid Illusionist

Nomads en-Kor

Narcomoeba

Dread Return

Thassa's Oracle

How it works

1. Activate Nomads en-Kor, targeting Cephalid Illusionist.
2. Mill 3.
3. Repeat this process until you mill your entire library.
4. When you mill Narcomoeba, put it on the battlefield.
5. Flashback Dread Return, sacrificing Nomads en-Kor, Cephalid Illusionist, and Narcomoeba, targeting Thassa's Oracle.
6. Resolve Thassa's Oracle's trigger with no cards in your library.