the front side of Zaxara, the Exemplary
the back of a classic MtG card
the front side of Necrotic Ooze
the back of a classic MtG card
the front side of Horseshoe Crab
the back of a classic MtG card

Color Identity: B, G, U

Initial Card State

  1.  Necrotic Ooze on the battlefield.
  2.  Zaxara and Horseshoe Crab in your graveyard.

Notable Prerequisites

  1. Necrotic Ooze does not have summoning sickness.

Steps

  1. Activate Necrotic Ooze using Zaxara's ability by tapping it, adding one blue manaone blue mana.
  2. Activate Necrotic Ooze using Horseshoe Crab's ability by paying one blue mana, untapping Necrotic Ooze.
  3. Repeat.

Results

  1. Infinite colored mana.
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