Undercity Scrounger, Freed from the Real, and Xorn

Prerequisites

• Undercity Scrounger on the battlefield
• Freed from the Real on the battlefield
• Xorn on the battlefield

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 Freed from the Real's second ability by paying , untapping Undercity Scrounger
4. Repeat

Results

• Infinite colored mana
• Infinite Treasure tokens