Undercity Scrounger, Pemmin's Aura, and Primal Vigor

Prerequisites

• Undercity Scrounger on the battlefield
• Pemmin's Aura on the battlefield
• Primal Vigor on the battlefield
• Pemmin's Aura attached to Undercity Scrounger
• Undercity Scrounger does not have summoning sickness
• A creature has died this turn

Steps

1. Activate Undercity Scrounger by tapping it, creating two Treasure tokens
2. Activate a Treasure token by tapping and sacrificing it, adding
3. Activate Pemmin's Aura's first ability by paying , untapping Undercity Scrounger
4. Repeat

Results

• Infinite colored mana
• Infinite Treasure tokens