Power Artifact + Grim Monolith
Produces: Infinite colorless mana
- Color identity
- U
Prerequisites
Power Artifact attached to Grim Monolith.
Steps
- Activate Grim Monolith's first ability by tapping it, adding {C}{C}{C}.
- Activate Grim Monolith's last ability by paying {2}, untapping it.
- Repeat.