Smaug the Impenetrable, March of the Machines, and Goblin Bombardment

Prerequisites

• Smaug the Impenetrable on the battlefield
• March of the Machines on the battlefield
• Goblin Bombardment on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing another artifact, which is a creature due to March of the Machines, dealing 1 damage to Smaug
2. Smaug triggers, creating a Treasure token
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers