Advances in technology have allowed it to evolve. It occasionally displays behavior not found in its programming.
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Evolves From
Once during your turn (before your attack), you may flip a coin. If heads, choose a Stadium card from your discard pile and put it into play. (If there's already a Stadium card in play, discard it.) This power can't be used if Dark Porygon2 is Asleep, Confused, or Paralyzed.
Flip a coin. If heads, prevent all damage done by attacks to Dark Porygon2 during your opponent's next turn. (Any other effects of attacks still happen.)