Eva, I misunderstood you, it turns out your curse was a real curse, not a blessing...
Evil Dragon too was a big idiot, with a portal available and yet he chose to fly back. If he hadn't flown back that day, this phony young dragon wouldn't have been mistaken for a real one and brought to the island.
"With a portal, why did you still choose to fly back?"
"Giant Dragons are the sovereigns of the skies, to enjoy the freedom of soaring and the thrill of breaking through the air with our wings... isn't that very normal?"
Mature Giant Dragons can dominate not only the land but also the skies.
To tell the truth, the sky is actually the home field for Giant Dragons, and except for beings at the saint and deity levels, no one can defeat a mature Giant Dragon in the air.
I can't guarantee it for other Giant Dragons, but as for myself, if those at the saint and deity levels don't have a Divine Artifact in hand, there's absolutely no chance they could beat me in the sky.