Malcolm, Keen-Eyed Navigator + Reckless Fireweaver + Leyline of Transformation

Prerequisites

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

Steps

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

Effects

• Infinite colored mana
• Infinite damage
• Infinite Treasure tokens