Dragon Lungs give the ability to fire a breathe of there elemental magic

they are also given the ability to devour there own element:

If the element comes from an outside source it replenishes health based on damage

If it was created using your magic power it sacrifices 1 health point for +5 damage

The user is able to touch and wield his element no matter the source

Can extend and retract 1 wing giving the ability to fly for some distance

Undergo a half body dragon transformation without effecting your actual size

This transformation last 3 rounds and gives you the same power and strength as a dragon