If a race isn't listed below, use your best judgment when adjusting racial statistics to accommodate this subrace. For races that don't have subrace options, choosing the half-dragon subrace means making changes to your character's base traits as follows. The half-dragon is a subrace that can be applied to any race which has subraces. These traits are tempered by a half-dragon's other lineage, but greed, arrogance, and paranoia are qualities that even good-aligned half-dragons often possess.

Half-green dragons are deceitful, while half-white dragons are often dim-witted brutes. Half-dragons inherit personality traits common to their draconic heritage, so that half-gold dragons are often shy and secretive, while half-copper dragons are impish and playful. Barring unforeseen misfortune, a typical half-dragon's life expectancy is twice that of its non-draconic line, so that a half-dragon human might live more than a century and a half.

By way of compensation, half-dragons are blessed with long life. Those that wish to propagate must find other ways to do so, almost always involving magic. Half-dragons are incapable of having natural-born offspring.

Regardless of their origins, all half-dragons have similar features and appearance, gaining special senses, resistance to destructive energy, and a breath weapon. In all these cases, the result is a creature that combines the essence of a dragon with the form of its original race. A creature might also transform into a half-dragon as a result of a mad wizard's spell or a ritual bath in dragon's blood. When a dragon in polymorphed form mates with another creature, the union sometimes produces half-dragon offspring.

Half dragon d&d