Malcolm, Keen-Eyed Navigator | Stalactite Dagger | Reckless Fireweaver

Cards

All permanents on the battlefield (
Stalactite Dagger attached to
Reckless Fireweaver).

You have a way to cause an artifact to enter the battlefield under your control.

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
Stalactite Dagger, 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.