Crab Umbra + Sanctum Weaver
Produces: Infinite colored mana
- Crab Umbra
- Sanctum Weaver
- Color identity
- GU
Prerequisites
You control at least four enchantments.
Steps
- Activate Sanctum Weaver by tapping it, adding at least {U}{U}{U}{U}.
- Activate Crab Umbra by paying {2}{U}, untapping Sanctum Weaver.
- Repeat.