Metalwork Colossus, The Ooze, Grinding Station, and Gorma, the Gullet

Prerequisites

• Metalwork Colossus in hand
• The Ooze on the battlefield
• Grinding Station on the battlefield
• Gorma, the Gullet on the battlefield

Steps

1. Cast Metalwork Colossus by paying , which enters with at least two +1/+1 counters on it due to Gorma
2. When Metalwork Colossus enters, Grinding Station triggers, untapping Grinding Station
3. Activate Grinding Station by tapping it and sacrificing Metalwork Colossus
4. When Metalwork Colossus dies, Gorma and The Ooze trigger
5. Resolve The Ooze's trigger, creating a Mutagen token for each +1/+1 counter Metalwork Colossus had
6. When the Mutagen enter, Grinding Station triggers that many times, untapping Grinding Station
7. Resolve Gorma's trigger, putting a +1/+1 counter on it
8. Resolve the Grinding Station ability from step 3
9. Activate Metalwork Colossus by sacrificing two Mutagens, returning it from your graveyard to your hand
10. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite Mutagen tokens
• Infinite death triggers
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count
• Infinite +1/+1 counters on a creature
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control