Jetmir, Nexus of Revels, Skittering Precursor, Sword of the Meek, and Grinding Station

Prerequisites

• Jetmir, Nexus of Revels on the battlefield
• Skittering Precursor on the battlefield
• Sword of the Meek on the battlefield
• Grinding Station on the battlefield
• You control no more than two additional creatures

Steps

1. Activate Grinding Station by tapping it and sacrificing Sword of the Meek
2. Skittering Precursor triggers, creating a 0/1 Eldrazi Spawn creature token
3. When the Eldrazi Spawn enters the battlefield as a 1/1 due to Jetmir, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Eldrazi Spawn
4. When Sword of the Meek enters the battlefield, Grinding Station triggers, untapping Grinding Station
5. Resolve the Grinding Station ability from step 1, causing target player to mill three cards
6. Activate the Eldrazi Spawn by sacrificing it, adding
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite colorless mana