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Tromell, Seymour's Butler + Pentad Prism + Crab Umbra

U manaG mana
Tromell, Seymour's Butler
Tromell, Seymour's Butler
Pentad Prism
Pentad Prism
Crab Umbra
Crab Umbra
Infinite colored manaInfinite proliferateInfinite charge counters on a permanent

How it works

  1. Activate Tromell by paying 1 and tapping it, causing you to put at least five charge counters on Pentad Prism.
  2. Activate Pentad Prism five times by removing five charge counters from it, adding 4U mana.
  3. Activate Crab Umbra by paying 2U mana, untapping Tromell.
  4. Repeat.
Legal in:CommanderLegacyOathbreakerVintage
2 decks$1.00