1. Customizing Dragons

    As discussed in the Dungeon Master’s Guide, you can customize any dragon’s stat block to reflect the dragon’s unique character. Minor changes such as those below are easy to make and have no impact on a dragon’s challenge rating.

    Languages. Most dragons prefer to speak Draconic but learn Common for dealing with allies and minions. But given their high Intelligence and long life span, dragons can easily learn additional languages. You can add languages to a dragon’s stat block.

    Skills. Most dragons are proficient in the Perception and Stealth skills, and many ragons have additional skill proficiencies. As with languages, you can customize a dragon’s skill list (even doubling their proficiency bonus with certain skills) to reflect particular interests and activities. You can also give a dragon tool proficiencies, articularly if the dragon spends time in Humanoid form.

    Spells. The Monster Manual’s variant rule about making dragons innate spellcasters is an easy way

    to add variety to dragons without impacting their challenge rating. Chapter 5 offers suggested spell lists for different kinds of dragons, but you can also choose spells to reflect the dragon’s character. A dragon who innately casts druid spells feels different from one who casts warlock spells. You can also give a dragon spells of a higher level than the variant rule allows, but such a tweak might increase the dragon’s challenge rating—especially if those spells deal damage or impose conditions on targets.

    Other Traits andActions. You can borrow traits and actions from other monsters to add unique fla

    vor to a dragon. Consider these examples:

    Change Shape. You can decide that a dragon acquires this action at a younger age than usual, par

    ticularly if you want to feature a dragon in Human oid form in your campaign. The “Shape-Shifting” section later in this chapter offers more information and inspiration. (See the metallic dragons in the Monster __Manual.) Damage Absorption. You might decide that a red or gold dragon is not only unharmed by fire damage, but actually healed by it. (See the flesh golem in the Monster Manual) Flyby. The dragon is an agile flier, quick to fly out of enemies’ reach. (See the peryton in the Mon ster __Manual.) Mimicry. Impersonating characters or their allies could be a fun trick for a crafty dragon. (See the kenku in the Monster __Manual.) Rejuvenation. You might decide that dragons in your campaign, being an essential part of the Material Plane, are nearly impossible to destroy. A dragon’s life essence might be preserved in the egg from which it first emerged, in its hoard, or in a cavernous hall at the center of the world, just as a lich’s essence is hidden in a phylactery. (See the lich in the Monster Manual.) Special Senses. Most dragons have blindsight and darkvision. You might upgrade blindsight to true sight, or you could give a dragon with a burrowing speed tremorsense. (See the introduction to the Monster Manual.) Tunneler. Any dragon with a burrowing speed could have this trait, moving through solid rock and leaving a tunnel in its wake. (See the umber hulk in the Monster Manual.) 2. Shape-Shifting Most metallic and gem dragons can change shape to take on a Humanoid or Beast form by the time they reach adulthood or ancient age. A few other Dragon varieties possess similar abilities (including deep dragons, described in chapter 6), and you can give any dragon the Change Shape action of an adult or ancient dragon without affecting the dragon’s challenge rating (as noted under Customizing Dragons” earlier in this chapter). Likewise, ifyou use the Monster Manual variant rule to make dragons innate spellcasters, you could give any adult or older dragon the polymorph spell to take on an alternate form. Dragons typically use their shape-shifting ability to move about in the world without drawing atten tion to themselves. Dragons like to know as much as they can about the lands around their lairs and the inhabitants of those lands, and posing as a more innocuous creature is an easy way to gather such information. Many metallic dragons also believe they are following the example of Bahamut, who is known to wander the worlds of the Material Plane in Humanoid guise, appearing sometimes as an elderly sage or wizard, other times as a young fisher or monk. In any of these forms, he is often accompanied by seven gold dragons in the form of brilliant yellow songbirds. Famously, Bahamut traveled the world of Krynn in the guise of a human wizard named Fizban. guiding the peoples of that world as they prepared for war against the evil forces of Tiamat. In the same way. some metallic dragons use their Humanoid forms to influence people. Since they can remain in Humanoid form indefinitely, metallic dragons often create false identities and mundane lives for themselves. Thanks to their keen intellects and strong person alities, shape-shifted dragons can easily end up in positions of leadership—either overtly as mayors, high priests, the heads of knightly orders, or crime bosses or behind the scenes as advisors, activists, or the spouses of rulers. Of course, years of careful scheming can be quickly unraveled if a shape-shifted dragon’s true nature is discovered. As a result, such dragons are careful to avoid being seen in their true forms. They show great caution in dealing with adventurers or anyone else who might have the magical ability to expose their nature. And dragons who need to revert to their true form are careful to do so out of sight—or to leave no surviving witnesses. Some metallic dragons believe that if they remain in a shape-shifted form for too long, they’ll lose the ability to revert to their true form. This is probably just superstition, but many dragons claim to know of others of their kind condemned to spend the rest of a very long life trapped in Humanoid or Beast form. Because of this belief, dragons who spend prolonged periods in the guise of other creatures often find periodic excuses to venture into the wilderness, letting them stretch their wings away from prying eyes. （Dragons of Song and Steel The propensity of some metallic dragons to spend long periods oftime in Humanoid form has led to numerous bits offolklore, including tales in which these shape-shifters are sometimes erroneously identified as unique varieties of metallic dragons. In the world ofthe Forgotten Realms, stories speak of “weredragons” or “song dragons,” which are variously described as “beautiful humans transformed into dragons” or as a distinct variety of metallic dragon. The world of Greyhawk has legends of similar dragons, called either Greyhawk dragons or steel dragons, which are said to favor life among Humanoids in the hustle and bustle ofgreat cities. The creatures featured in these legends are almost certainly copper, silver, or other metallic dragons who simply favored that particular form. Some dragons even seem to prefer Humanoid form to their own and delight in surrounding themselves with companions who can answer their endless questions about Humanoid art, culture, history, and politics.）
    1. Roleplaying Dragons / Dragon Flaws and Secrets /How to Name Your Dragon Remain to be Design