Actually, the role of the Elf Tribe and destruction are somewhat similar, both considered the bane of magical creatures, except that destruction belongs to the category of Death Energy, while the Elf Dragon belongs to Life Energy, and the bases of the two are different.
In terms of hierarchy, the level of the Elf Dragon is obviously higher than that of destruction. Not only are they the ultimate soldiers of the Elf Tribe, but they are also special creatures bred by numerous natural essences, with an extremely strong immunity to Death Energy.
Protected by the Eternal Tree within the fortress as their habitat, their own energy had maximized.
Thus, although the number of Elf Dragons was only five hundred, by capitalizing on their effect of weakening the opponent's Death Energy coupled with their own attack ability against destruction, they immediately restrained the destructive killing power against the Alliance's air force.