Basalt Monolith, Trazyn the Infinite, and Training Grounds

Prerequisites

• Basalt Monolith in the graveyard
• Trazyn the Infinite on the battlefield
• Training Grounds on the battlefield

Steps

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

Results

• Infinite colorless mana