Yomiji, Who Bars the Way, Mox Amber, and Grinding Station

Prerequisites

• Yomiji, Who Bars the Way on the battlefield
• Mox Amber on the battlefield
• Grinding Station on the battlefield

Steps

1. Activate Grinding Station by tapping it and sacrificing Mox Amber
2. Yomiji triggers, returning Mox Amber from your graveyard to your hand
3. Resolve the Grinding Station ability, causing target player to mill three cards
4. Cast Mox Amber by paying
5. When Mox Amber enters the battlefield, Grinding Station triggers, untapping Grinding Station
6. Activate Mox Amber by tapping it, adding one mana of any color among legendary creatures or planeswalkers you control
7. Repeat

Results

• Infinite mill
• Infinite self-mill
• Infinite storm count
• Infinite mana among colors of legendary creatures and planeswalkers you control