Cause an artifact to enter the battlefield under your control.
Reckless Fireweaver triggers, dealing 1 damage to each opponent.
Malcolm triggers, as Reckless Fireweaver is a Pirate due to Captain's Hook, creating a Treasure token for each opponent dealt damage this way.
When the Treasure(s) enter, Reckless Fireweaver triggers that many times.
Resolve the first Reckless Fireweaver trigger, dealing 1 damage to each opponent.
Repeat from step 3.

Infinite artifact ETB

Infinite artifact LTB

Infinite artifact sacrifice triggers

Infinite artifact tokens

Infinite colored mana

Infinite damage

Infinite Treasure tokens

Malcolm, Keen-Eyed Navigator

Captain's Hook

Reckless Fireweaver

Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
Havoc Jester triggers, dealing 1 damage to any opponent.
Malcolm triggers, creating a Treasure token.
Repeat.

Havoc Jester

Cause an artifact to enter the battlefield under your control.
Hedron Detonator triggers, dealing 1 damage to target opponent.
Malcolm triggers, creating a Treasure token.
Treasure token enter the battlefield, triggering Hedron Detonator, dealing 1 damage to target opponent.
Repeat from step 2.

Hedron Detonator

Activate a Treasure token by tapping and sacrificing it, adding one mana of any color.
Mayhem Devil triggers, dealing 1 damage to an opponent.
Malcolm triggers, creating a Treasure token.
Repeat.

Mayhem Devil

Activate Embraal Gear-Smasher by tapping it and sacrificing another artifact, dealing 2 damage to each opponent.
Malcolm triggers, creating a Treasure artifact token for each opponent dealt damage by Embraal Gear-Smasher.
Activate a Treasure by tapping and sacrificing it, adding {U}.
Activate Pemmin's Aura's first ability by paying {U}, untapping Embraal Gear-Smasher.
Repeat.

Near-infinite colored mana

Near-infinite Treasure tokens

Pemmin's Aura

Embraal Gear-Smasher

Activate Embraal Gear-Smasher by tapping it and sacrificing another artifact, dealing 2 damage to each opponent.
Malcolm triggers, creating a Treasure artifact token for each opponent dealt damage by Embraal Gear-Smasher.
Activate a Treasure by tapping and sacrificing it, adding {U}.
Activate Freed from the Real's second ability by paying {U}, untapping Embraal Gear-Smasher.
Repeat.

Combos with "Captain's Hook"