Smaug the Impenetrable, Battered Golem, and Heavy Arbalest

Prerequisites

• Smaug the Impenetrable on the battlefield
• Battered Golem on the battlefield
• Heavy Arbalest on the battlefield

Steps

1. Activate Battered Golem 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, Battered Golem triggers twice
4. Resolve the first Battered Golem trigger, untapping it
5. Holding priority, activate Battered Golem by tapping it, dealing 2 damage to any target
6. Resolve the second Battered Golem 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