Basalt Monolith, Ensoul Artifact, and Agatha of the Vile Cauldron

Prerequisites

• Basalt Monolith on the battlefield
• Ensoul Artifact on the battlefield
• Agatha of the Vile Cauldron on the battlefield
• Basalt Monolith does not have summoning sickness
• Agatha of the Vile Cauldron has power 1 or greater

Steps

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

Results

• Infinite colorless mana