Trazyn the Infinite, Scuttling Sliver, Prismatic Geoscope, and Rukarumel, Biologist

Prerequisites

• Trazyn the Infinite on the battlefield
• Scuttling Sliver on the battlefield
• Prismatic Geoscope in the graveyard
• Rukarumel, Biologist on the battlefield

Steps

1. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least three mana of any color
2. Activate Trazyn by paying , untapping it
3. Repeat

Results

• Infinite colored mana
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce