Smaug the Impenetrable, Steelfin Whale, and Heavy Arbalest

Prerequisites

• Smaug the Impenetrable on the battlefield
• Steelfin Whale on the battlefield
• Heavy Arbalest on the battlefield

Steps

1. Activate Steelfin Whale using the ability granted to it by Heavy Arbalest by tapping it, dealing 2 damage to Smaug
2. Smaug triggers, creating two Treasure tokens
3. When the Treasure enters, Steelfin Whale triggers twice
4. Resolve the first Steelfin Whale trigger, untapping it
5. Holding priority, activate Steelfin Whale by tapping it, dealing 2 damage to any target
6. Resolve the second Steelfin Whale trigger, untapping it
7. Repeat

Results

• Infinite Treasure tokens
• Infinite colored mana
• Infinite damage
• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens