Today's CotD is Unown G from GE, one of the most played (and for a good reason) cards in this format. Statwise, 50 HP is ok for a Basic (but really, is irrelevant considering how you play Unown G), +10 Weakness to
sychic: (not too great), no Resistance, and :colorless to Retreat. The only reason you will use Unown G is for its GUARD Poke-Power, which lets you attach Unown G as a Pokemon Tool to one of your Pokemon, and then prevent all effects of an attack (excluding damage) done to it. This effectively renders whatever Pokemon Unown G is attached to immune to anything: Status Conditions, damage counter placing attacks, a certain attack called Take Out, and so on. It's even near (if not, completely) impossible to get rid of, bar KOing whatever Pokemon it's attached to. Other than that, Hidden Power is meh, 50 for
sychic::colorless is nice, except if Unown G has any damage on it, that shrinks down to a base 10 damage.
Modified - 10/10 (If you're not using a few of these in your deck, you'd better be able to justify not using it, especially given the status of today's format)
Limited - 5/10 (Far less useful, aside from blocking the random effect really)
Unlimited - 2/10 (No use here much)