I absolutely LOATHE this card.
Nationals, T16, I have a god hand, my opponent an Unown Q start...he topdecks Giratina, I get the worst hand imagineable and he gets a god hand and proceeds to knock me out of tops.
It is a good card. The attack isn't great, his HP is very good, retreat is trash (you dont want him active), but that power...ugh, its good, but I still loathe it.
I rate it 6.5/10. The power is good, but bench space is highly valuable and his retreat cost is painful.