Malcolm, Keen-Eyed Navigator + Reckless Fireweaver + Imagecrafter

Prerequisites

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

Steps

1. 1Activate Imagecrafter by tapping it, giving Reckless Fireweaver the Pirate creature type until end of turn.
2. 2Cause an artifact to enter the battlefield under your control.
3. 3Reckless Fireweaver triggers, dealing 1 damage to each opponent.
4. 4Malcolm triggers, as Reckless Fireweaver is a Pirate due to Imagecrafter, creating a Treasure token for each opponent dealt damage this way.
5. 5When the Treasure(s) enter, Reckless Fireweaver triggers that many times.
6. 6Resolve the first Reckless Fireweaver trigger, dealing 1 damage to each opponent.
7. 7Repeat from step 4.

Effects

• Infinite colored mana
• Infinite damage
• Infinite Treasure tokens