Idris, Soul of the TARDIS + Grim Monolith + Training Grounds
Produces: Infinite colorless mana
- Idris, Soul of the TARDIS
- Grim Monolith
- Training Grounds
- Color identity
- UR
Prerequisites
Idris does not have summoning sickness.
Steps
- 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.