Crab Umbra + Sanctum Weaver

GU identity

Commander legal

The 2 combo pieces

What must be in place

You control at least four enchantments.

How to execute it

  1. Activate Sanctum Weaver by tapping it, adding at least {U}{U}{U}{U}.
  2. Activate Crab Umbra by paying {2}{U}, untapping Sanctum Weaver.
  3. Repeat.

What the combo produces