Hi, Derric here! Today, what I'm going to talk about is Koga's Ditto. When you
  bought a Gym Challenge booster pack and pull out a holofoil Koga's Ditto.
  First you look at it's Hp , 40hp ugh. Then you look at it's attack,
  "Pound" 10 damage. Nothing good about this card then you think how
  much you should sell it.
      But look again! It's
  first attack, "Giant Growth"  with a lucky coinflip make's
  Koga's Ditto's hp 80! And it's "Pound" attack does 30 damage instead
  of 10. For one energy only too! Both Koga's Ditto's attack cost is one
  colorless energy.
      It may not have the
  original Ditto's famous "Transform" Pokemon Power but's first attack
  makes up for it. An overall good card!