Trace
                                        When it enters a battle, the Pokémon copies an opposing Pokémon's Ability.
                                
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                                        Compares an opposing Pokémon's Defense and Sp. Def stats before raising its own Attack or Sp. Atk stat—whichever will be more effective.
                                It is an artificial Pokémon. Since it doesn't breathe, people are excited by its potential to be useful in any environment.
Porygon is an artificial Pokémon created using advanced scientific means. It can move freely through cyberspace.
It has no discernible heartbeat and does not seem to draw breath, and yet it appears to function without issue. I cannot even begin to explain this utterly bizarre anomaly.