Metalwork Colossus, The Ooze, Viscera Seer, and Gorma, the Gullet

Prerequisites

• Metalwork Colossus in hand
• The Ooze on the battlefield
• Viscera Seer 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. Activate Viscera Seer by sacrificing Metalwork Colossus
3. When Metalwork Colossus dies, Gorma and The Ooze trigger
4. Resolve The Ooze's trigger, creating a Mutagen token for each +1/+1 counter Metalwork Colossus had
5. Resolve Gorma's trigger, putting a +1/+1 counter on it
6. Resolve the Viscera Seer ability
7. Activate Metalwork Colossus by sacrificing two Mutagens, returning it from your graveyard to your hand
8. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite Mutagen tokens
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite scry 1
• Infinite storm count
• Infinite +1/+1 counters on a creature