Encroaching Mycosynth + Grinding Station + Mortuary + Narcomoeba

UB identity

Commander legal

The 4 combo pieces

• Encroaching Mycosynth
• Grinding Station
• Mortuary
• Narcomoeba

How to execute it

1. Activate Grinding Station by tapping it and sacrificing Narcomoeba, targeting yourself.
2. When Narcomoeba dies, Mortuary triggers, putting Narcomoeba on top of your library from your graveyard.
3. Resolve the Grinding Station ability, causing you to mill three cards.
4. Narcomoeba triggers, returning itself to the battlefield from your graveyard.
5. When Narcomoeba enters the battlefield, Grinding Station triggers, untapping Grinding Station.
6. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite self-mill