the front side of Horseshoe Crab
the back of a classic MtG card
the front side of Jiang Yanggu, Wildcrafter
the back of a classic MtG card
the front side of Mana Reflection
the back of a classic MtG card

Color Identity: G, U

Initial Card State

  1.  All permanents on the battlefield.

Notable Prerequisites

  1. Horseshoe Crab does not have summoning sickness.
  2. Horseshoe Crab has at least one +1/+1 counter on it.

Steps

  1. Activate Horseshoe Crab by tapping it, adding one blue manaone blue mana.
  2. Activate Horseshoe Crab by paying one blue mana, untapping it.
  3. Repeat.

Results

  1. Infinite colored mana.
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