Chromatic Dragon

While there are many types of dragons, from the powerful planar dragons to the strange esoteric dragons, few dragon varieties are as well-known and as rightly
feared as the chromatic dragons. Differentiated by the hue of their scales, each color of dragon unleashes its own flavor of murderous cruelty—be it by claw,
tooth, or breath—and unlike most creatures, dragons only become more powerful as they age. Their lust for treasure, food, bloodshed, and control are legendary. Physically powerful with egos to match, these dragons are often morally depraved and act as criminal masterminds, vicious tyrants, or voracious raiders.

Shape-Changing Dragons

Some dragons can take humanoid form, allowing them to infiltrate settlements or influence others without revealing their true nature. They gain the following ability:

Change Shape [one-action] (arcane, concentrate, polymorph, transmutation) The dragon takes on the appearance of any Small or Medium humanoid. This doesn’t change its Speed or attack and damage bonuses with its Strikes, but might change the damage type its Strikes deal (typically to bludgeoning).

Chromatic Dragon Spellcasters

To make a chromatic dragon spellcaster, remove the dragon’s Draconic Frenzy and Draconic Momentum abilities, and give it the spells outlined in its sidebar. You can swap out any number of these with other arcane spells, provided you keep the same number of spells for each level. You might also want to increase the dragon’s Intelligence or Charisma modifier by 1 or 2 to reflect its mastery of magic.