Grim Monolith + Idris, Soul of the TARDIS + Zirda, the Dawnwaker
URW identity
Commander legal
The 3 combo pieces
What must be in place
Idris does not have summoning sickness.
How to execute it
- Activate Idris using Grim Monolith's first ability by tapping it, adding {C}{C}{C}.
- Activate Idris using Grim Monolith's second ability by paying {2}, untapping it.
- Repeat.
What the combo produces
- Infinite colorless mana