Myr Welder, Pemmin's Aura, and Khalni Gem

Prerequisites

• Myr Welder on the battlefield
• Pemmin's Aura on the battlefield
• Khalni Gem in exile
• Pemmin's Aura attached to Myr Welder
• Myr Welder does not have summoning sickness

Steps

1. Activate Myr Welder using Khalni Gem's ability by tapping it, adding
2. Activate Pemmin's Aura's first ability by paying , untapping Myr Welder
3. Repeat

Results

• Infinite colored mana