Prevent all effects of attacks, including damage, done to Mew by Evolved Pokémon. You can't use this power if Mew is Asleep, Confused, or Paralyzed.(CoroCoro 1997)

• Psyshock

  10

  Flip a coin. If heads, the Defending Pokémon is now Paralyzed.

So rare that it is still said to be a mirage by many experts. Only a few people have seen it worldwide.