Dragons

From the introduction:

Dragons are perhaps the best-known and most loved of all fantasy creatures. But fully harnessing the mystique, power, and danger that dragons embody can be a challenge in any game. As written, standard dragons can feel a little lackluster, especially to an experienced party that has fought them before. Presented here are a collection of templates that can be applied to any existing dragon stat block (even to the dragon lords of Midgard). These templates allow you to take a standard dragon and jazz them up with a new array of special abilities. Your players are sure to be terrified when a mighty dragon starts slinging spells or rallying allies to charge the adventurers.