Grim Monolith + Tough Cookie + Voltaic Construct
Mana needed: {2}{G}
G identity
Commander legal
The 3 combo pieces
How to execute it
- Animate Grim Monolith using Tough Cookie.
- Activate Grim Monolith by tapping it, adding {C}{C}{C}.
- Activate Voltaic Construct by paying {2}, untapping Grim Monolith.
- Repeat from step 2.
What the combo produces
- Infinite colorless mana
- Infinite untap of artifact creatures you control