Basalt Monolith, Cyberdrive Awakener, and Agatha of the Vile Cauldron

Prerequisites

• Basalt Monolith on the battlefield
• Cyberdrive Awakener in hand
• Agatha of the Vile Cauldron on the battlefield
• Basalt Monolith does not have summoning sickness
• available

Steps

1. Cast Cyberdrive Awakener by paying
2. When Cyberdrive Awakener enters the battlefield, it triggers, causing each noncreature artifact you control to become a 4/4 artifact creature until end of turn
3. Activate Basalt Monolith's first ability by tapping it, adding
4. Activate Basalt Monolith's last ability by paying at most , untapping it
5. Repeat from step 3

Results

• Infinite colorless mana