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Crab Umbra + Sanctum Weaver

U manaG mana
Crab Umbra
Crab Umbra
Sanctum Weaver
Sanctum Weaver
Infinite colored mana

How it works

  1. Activate Sanctum Weaver by tapping it, adding at least U manaU manaU manaU mana.
  2. Activate Crab Umbra by paying 2U mana, untapping Sanctum Weaver.
  3. Repeat.
Legal in:CommanderLegacyModernOathbreakerVintage
628 decks$4.37