Generally you only pump the 4th through 7th mana into this when you have nothing better to cast (or bluff) meaning you don't feel to ripped off when they do kill it in response to a level up
Unfortunately, youll have to draw them over the next two turns, so youll be stuck with those two bad cards regardless
Its also not on the Reserved List, so it has been reprinted extensively since first appearing in Limited Edition Alpha
Now she exports them in seconds
What really pushes it over the top, however, is the fact that its also a solid card when played fairly
Kenrith, the Returned King can also use this dragon, such as reanimating it with Kenrith's last effect or giving it +1/+1 counters to finish off the opponent even more swiftly