Initial Card State
- Grim Monolith in exile (exiled by Idris).
- Idris and Biomancer's Familiar on the battlefield.
Notable Prerequisites
- Idris does not have summoning sickness.
Steps
- Activate Idris using Grim Monolith's first ability by tapping it, adding ({C} magic symbol)
({C} magic symbol)
({C} magic symbol)
. - Activate Idris using Grim Monolith's second ability by paying ({2} magic symbol)
, untapping it. - Repeat.
Results
- Infinite colorless mana.
Bracket Tag
This combo has been estimated to be Powerful (Bracket 3+).