Cause an artifact to enter the battlefield under your control.
Weftstalker Ardent triggers, dealing 1 damage to each opponent.
Malcolm triggers, as Weftstalker Ardent is a Pirate due to Maskwood Nexus, creating a Treasure token for each opponent dealt damage this way.
When the Treasure(s) enter, Weftstalker Ardent triggers that many times.
Resolve the first Weftstalker Ardent trigger, dealing 1 damage to each opponent.
Repeat from step 3.
This loop is all about turning a single artifact entry into a self-sustaining storm of damage and treasure, thanks to the clever connective tissue provided by Maskwood Nexus. Because the Nexus makes all of your creatures—including Weftstalker Ardent—into Pirates, every time Weftstalker Ardent triggers upon an artifact entering and pings your opponents, Malcolm, Keen-Eyed Navigator recognizes those damage-dealing Pirates and mints a fresh batch of Treasure tokens. Those very same Treasures entering the battlefield then satisfy Weftstalker Ardent's condition of "another creature or artifact you control enters," creating a perpetual motion machine that endlessly repeats to drain your opponents and flood your board with infinite resources.