Basalt Monolith, March of the Machines, and Biomancer's Familiar

Prerequisites

• Basalt Monolith on the battlefield
• March of the Machines on the battlefield
• Biomancer's Familiar on the battlefield

Steps

1. Activate Basalt Monolith's first ability by tapping it, adding
2. Activate Basalt Monolith's last ability by paying , untapping it
3. Repeat

Results

• Infinite colorless mana