Homebrew Half-blood (Dragon/Tiefling) Species Details

 

The bard smirked as he looked upon the dragon before them. His friends were wary, swords and shields drawn, magic at the ready. This would be no ordinary foe, no ordinary battle. This would be a tale they told throughout the ages, through hushed whispers in taverns that held them in awe. 

Or....mild horror. 

Jaws agape, his friends watched as he sauntered up to the scaley foe of old, a smug grin on his face and his hands in his pockets. "Hey, gorgeous!" He shouted. "Why don't we throw this battle aside and make some flames back at my place, hm? I'll show you what it means to really be set ablaze....with desire."  He winked. 

The dragon blushed. Shifting into a gorgeous woman, with flame-red hair and eyes green as emeralds, she walked up to the bard. "If you're lying," she crooned, "I'll eat you and your friends."

 
"And that's how your mother and I fell in love, Timothy."
The half-blood wished the floor would swallow him whole.  

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Born of the unique union between Dragon and other races, specifically Tieflings, in this case, Halfbloods are notably unholy. With a mix of devil blood and dragon heritage, halfbloods stand a little taller than the average Tiefling, not often dipping below six feet. They have the same horns as either set of parents, although some have been found with multiple sets more akin to their draconian parentage than Tiefling, ranging in size and shape. 
They are unique in the manner that while they do possess scales, it is more like snakeskin than dragonskin, the scales being small and tightly interlaid, looking almost like flesh from a distance. Their skin is harder to scar and mark, and tattoos are notably painful. 
Along with this, halfbloods either have the ears of their parents, or an inner ear like dragons, and their eyes always appear as of that of their dragon parents. They have natural talons, and sharper teeth, however, their coloration in hair and skin color can vary accordingly. Sometimes, they have vestigial wings, but they cannot use these to fly, they are merely decorative. 
All halfbloods have draconic tails, similar to their parents. 

Dragonbreath 
Halfbloods possess the same dragonbreath as their parents, with the stats for said breath being the same as Dragonborn in the Player's Handbook. 

Natural Claws
Halfbloods can do 1d4 piercing damage with their talons, without fear of them breaking. They are also very difficult to file down, or trim. 

Names 
Tiefling and Draconic naming conventions still apply, often with multiple children in the same family having wildly different names. (I.e Boneshard and Serendipity)

Half-blood (Dragon/Tiefling) Traits

Your draconic heritage manifests in a variety of traits you share with other dragonborn.

Tiefling Parentage

You know Darkness as a part of your Tiefling Parentage. You know this spell innately, without components, and can cast it once per short rest. You can see through your own magical Darkness. 

Ability Score Increase

Your Strength score increases by 2, and your Charisma score increases by 1.

Age

Halfbloods are notably long-lived, probably due to their draconic parentage. Although they grow at a similar rate to humans until their 30th birthday, they can often live upwards of 500 years. 

Alignment

Halfbloods are quite often neutral, stemming from the conflicting natures of their parentages. An evil or good alignment halfblood is rare. 

Size

Dragonborn are taller and heavier than humans, standing well over 6 feet tall and averaging almost 250 pounds. Your size is Medium.

Speed

Your base walking speed is 35 feet.

Draconic Ancestry

You have draconic ancestry. Choose one type of dragon from the Draconic Ancestry table. Your breath weapon and damage resistance are determined by the dragon type, as shown in the table.

Draconic Ancestry

Dragon Damage Type Breath Weapon
Black Acid 5 by 30 ft. line (Dex. save)
Blue Lightning 5 by 30 ft. line (Dex. save)
Brass Fire 5 by 30 ft. line (Dex. save)
Bronze Lightning 5 by 30 ft. line (Dex. save)
Copper Acid 5 by 30 ft. line (Dex. save)
Gold Fire 15 ft. cone (Dex. save)
Green Poison 15 ft. cone (Con. save)
Red Fire 15 ft. cone (Dex. save)
Silver Cold 15 ft. cone (Con. save)
White Cold 15 ft. cone (Con. save)

Breath Weapon

You can use your action to exhale destructive energy. Your draconic ancestry determines the size, shape, and damage type of the exhalation. When you use your breath weapon, each creature in the area of the exhalation must make a saving throw, the type of which is determined by your draconic ancestry. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 2d6 damage on a failed save, and half as much damage on a successful one. The damage increases to 3d6 at 6th level, 4d6 at 11th level, and 5d6 at 16th level. After you use your breath weapon, you can’t use it again until you complete a short or long rest.

Damage Resistance

You have resistance to the damage type associated with your draconic ancestry.

Languages

You can speak, read, and write Common, Draconic, and one language your non-dragon parent knows. If they only know Common and Draconic, you may choose one extra language.  Draconic is thought to be one of the oldest languages and is often used in the study of magic. The language sounds harsh to most other creatures and includes numerous hard consonants and sibilants.