Paradox Engine, Witch's Oven, and Metalwork Colossus

Prerequisites

• Paradox Engine on the battlefield
• Witch's Oven on the battlefield
• Metalwork Colossus on the battlefield
• Noncreature artifacts you control have mana value ten or greater

Steps

1. Activate Witch's Oven by tapping it and sacrificing Metalwork Colossus, creating two Food artifact tokens
2. Activate Metalwork Colossus by sacrificing the Foods, returning it from your graveyard to your hand
3. Cast Metalwork Colossus by paying
4. Paradox Engine triggers, untapping all nonland permanents you control
5. If applicable, activate any number of nonland permanents by tapping them, adding at least
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mana nonland permanents you control can produce
• Infinite sacrifice triggers
• Infinite storm count
• Infinite untap of nonland permanents you control