Ok so did a few tests and figured it out. Stat wise it seems to be pretty much identical to your vanilla wyvern, but it does differ in speed and agility, and also has that dive bomb ability.

that is correct, i didnt want it to be more op than the wyvern, i wanted it to be exactly as it is, more agility, more speed, and some enhanced abilities, take note that the stamina doesnt get effected while flying, except when it flies and breaths fire at the same time ^^

Is there a way I can edit that? I want it to be much stronger than a wyvern.