Smaug the Impenetrable | Battered Golem

Cards

All permanents on the battlefield (
Battered Golem without summoning sickness and
Heavy Arbalest attached to
Battered Golem).

Activate
Battered Golem using the ability granted to it by
Heavy Arbalest by tapping it, dealing 2 damage to
Smaug.
Smaug triggers, creating two Treasure tokens.
When the Treasure enters,
Battered Golem triggers twice.
Resolve the first
Battered Golem trigger, untapping it.
Holding priority, activate
Battered Golem by tapping it, dealing 2 damage to any target.
Resolve the second
Battered Golem trigger, untapping it.
Repeat.

This combo has been estimated to be Spicy (Bracket 3-4+).