Activate Battered Golem using the ability granted to it by Burning Anger by tapping it, dealing 3 damage to Smaug.
Smaug triggers, creating three Treasure tokens.
When the Treasure enters, Battered Golem triggers that many times.
Resolve the first Battered Golem trigger, untapping it.
Holding priority, activate Battered Golem by tapping it, dealing 3 damage to any target
Repeat steps 4 and 5 once, then repeat step 4 an additional time.
Repeat from step 1.
This clever loop starts by outfitting Battered Golem with Burning Anger, granting the mechanical automaton the ability to hurl fireballs directly at its targets. When you point that fiery wrath at Smaug the Impenetrable, his fiery temper triggers to shower you with Treasure tokens. Every single one of those incoming Treasures then triggers Battered Golem's static untap ability, standing the golem back up so it can tap and blast away once more in an endless cycle of self-sustaining destruction and profit.