Jan Jansen, Chaos Crafter, Dross Scorpion, Liquimetal Coating, and Goblin Bombardment

Prerequisites

• Jan Jansen, Chaos Crafter on the battlefield
• Dross Scorpion on the battlefield
• Liquimetal Coating on the battlefield
• Goblin Bombardment on the battlefield
• You control an additional creature

Steps

1. Activate Liquimetal Coating by tapping it, causing Jan Jansen to become an artifact creature until end of turn
2. Activate Jan Jansen's first ability by tapping it and sacrificing a creature, creating two Treasure tokens
3. Dross Scorpion triggers, untapping Jan Jansen
4. Activate Jan Jansen's second ability by tapping it and sacrificing a Treasure token, creating two 1/1 Construct creature tokens
5. Activate Goblin Bombardment by sacrificing a Construct token
6. Dross Scorpion triggers, untapping Jan Jansen
7. Resolve the Goblin Bombardment's ability, dealing 1 damage to any target
8. Repeat from step 2

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite tapped creature tokens
• Infinite tapped Treasure tokens