Trazyn the Infinite, Scuttling Sliver, Prismatic Geoscope, and Imagecrafter

Prerequisites

• Trazyn the Infinite on the battlefield
• Scuttling Sliver on the battlefield
• Prismatic Geoscope in the graveyard
• Imagecrafter on the battlefield

Steps

1. Activate Imagecrafter by tapping it, causing Trazyn to become a Sliver until end of turn
2. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least three mana of any color
3. Activate Trazyn by paying , untapping it
4. Repeat from step 2

Results

• Infinite colored mana
• Infinite untap of Slivers you control
• Infinite red mana
• Infinite green mana
• Infinite blue mana
• Infinite black mana
• Infinite white mana