Its programming was modified to enable it to travel through alien dimensions. Seems there might have been an error…
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Artist
Once during your turn (before your attack), you may flip a coin. If heads, search your discard pile for a Trainer card, show it to your opponent, and put it on top of your deck. This power can't be used if Porygon-Z is affected by a Special Condition.
Colorless • Colorless • Colorless
If Porygon-Z has no Rainbow Energy attached to it, Porygon-Z does 20 damage to itself and Porygon-Z is now Confused.