If you manage to transform it for a whopping 9 or 10 mana, you get an even better 11/11 with trample, indestructible, and damage with poison counters
In fact, the biggest challenge to moving on with the game may simply be locating more physical cards, as the Pokmon Company has struggled to match supply to demand over the past couple years.
Even if you're not a huge fan of Lugia, this card's unique artwork and color palette give it an inherent appeal, especially since there aren't any others like it
Once the exchange has happened, either of the two creatures leaving the battlefield has no effect on the other creature's text box
The designers settled on Plot, a fair but powerful mechanic which is near its best on a card like this