Flitwing, Lyev Detective, Ulvenwald Mysteries, and Grinding Station

Prerequisites

• Flitwing, Lyev Detective on the battlefield
• Ulvenwald Mysteries on the battlefield
• Grinding Station on the battlefield

Steps

1. Activate Grinding Station by tapping it and sacrificing a Clue
2. Ulvenwald Mysteries' second ability triggers, creating a Clue token due to Flitwing
3. When the Clue enters, Grinding Station triggers, untapping Grinding Station
4. Resolve the Grinding Station ability from step 1, causing a player to mill three cards Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite mill
• Infinite self-mill