Half-Dragon Template

A beast, humanoid, giant, or monstrosity can become a half-dragon. It keeps its statistics, except as follows.
Challenge. To avoid recalculating the creature's challenge rating, apply the template only to a creature that meets the optional prerequisite in the Breath Weapon table below. Otherwise, recalculate the rating after you apply the template.
Senses. The half-dragon gains blindsight with a radius of 10 feet and darkvision with a radius of 60 feet.
Resistances. The half-dragon gains resistance to a type of damage based on its color.

Color Damage Resistance
Black or copper Acid
Blue or bronze Lightning
Brass, gold, or red Fire
Green Poison
Silver or white Cold

Languages. The half-dragon speaks Draconic in addition to any other languages it knows.
New Action: Breath Weapon. The half-dragon has the breath weapon of its dragon half. The half-dragon's size determines how this action functions.

Size Breath Weapon Optional Prerequisite
Large or smaller As a wyrmling Challenge 2 or higher
Huge As a young dragon Challenge 7 or higher
Gargantuan As an adult dragon Challenge 8 or higher