Senses. The half-dragon gains Blindsight with a radius of 10 feet and Darkvison 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.
| 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 |