Battered Golem + Clock of Omens + Ancestral Statue + Empowered Autogenerator

Battered Golem

Clock of Omens

Ancestral Statue

Empowered Autogenerator

How it works

1. Activate Empowered Autogenerator's first ability by tapping it, putting a charge counter on it and adding at least 4.
2. Cast Ancestral Statue by paying 4.
3. Ancestral Statue enters the battlefield, triggering itself and Battered Golem.
4. Resolve the Battered Golem trigger, untapping it.
5. Activate Clock of Omens by tapping Battered Golem and Ancestral Statue, untapping Empowered Autogenerator.
6. Resolve the Ancestral Statue trigger, returning it from the battlefield to your hand.
7. Repeat.