Malcolm, Keen-Eyed Navigator, Conspiracy, and Weftstalker Ardent

Prerequisites

• Malcolm, Keen-Eyed Navigator on the battlefield
• Conspiracy on the battlefield
• Weftstalker Ardent on the battlefield

Steps

1. Cause an artifact to enter the battlefield under your control
2. Weftstalker Ardent triggers, dealing 1 damage to each opponent
3. Malcolm triggers, as Weftstalker Ardent is a Pirate due to Conspiracy, creating a Treasure token for each opponent dealt damage this way
4. When the Treasure(s) enter, Weftstalker Ardent triggers that many times
5. Resolve the first Weftstalker Ardent trigger, dealing 1 damage to each opponent
6. Repeat from step 3

Results

• Infinite colored mana
• Infinite damage
• Infinite Treasure tokens