Metalworker, Pemmin's Aura, and Prismite

Prerequisites

• Metalworker on the battlefield
• Pemmin's Aura on the battlefield
• Prismite on the battlefield

Steps

1. Activate Metalworker by tapping it, causing you to reveal at least two artifact cards from your hand and add at least
2. Activate Prismite by paying , adding
3. Activate Pemmin's Aura's first ability by paying , untapping Metalworker
4. Repeat

Results

• Infinite colored mana
• Infinite colorless mana