Grim Monolith + Mana Reflection

G identity

Commander legal

The 2 combo pieces

• Grim Monolith
• Mana Reflection

How to execute it

1. Activate Grim Monolith's first ability by tapping it, adding {6}.
2. Activate Grim Monolith's last ability by paying {3}, untapping it.
3. Repeat.

What the combo produces

• Infinite colorless mana