Enduring Renewal + Deathrender + Grinding Station

Enduring Renewal

Deathrender

Grinding Station

How it works

1. Activate Grinding Station by tapping it and sacrificing the creature with Deathrender attached.
2. When the creature dies, Enduring Renewal and Deathrender trigger.
3. Resolve the Enduring Renewal trigger, returning the creature from your graveyard to your hand.
4. Resolve the Deathrender trigger, putting the creature from your hand onto the battlefield, and attaching Deathrender to it.
5. When the creature enters the battlefield, Grinding Station triggers, untapping Grinding Station.
6. Resolve the Grinding Station ability from step 1, causing target player to mill three cards.
7. Repeat.