Traits and rarity:
-Anatomy: Elxingn's main anatomy is relative to human anatomy.
Their left foot is detached from their body but still a part of them, the same with their tail parts. These are connected by an invisible or touchable source like a gravitational pull. 

-Tail: The tail is broken up into pieces but all have the same overall structure. Though broken, the tail is solid; an attack from an Elxingn tail can be lethal.
Two Pieces (common)
Three pieces (Uncommon)
4+ Pieces (ultra-Rare)
Solid Tail (Mystic)

-Element: each Elxingn has an element about them. The way the element is used is by becoming one with the element (Ex. Earth elements can make a tree grow in a matter of minutes. A passion Element can make driven enemies become friends if not more)
Gray: Powerless (Common)
Blue: water (Common)
Red: Fire (Common)
Green: Earth (Common)
Pink: Passion (Rare)
White: Life/ revival (Ultra-Rare)
Black: All powers (Mystic)

-Horns: 
Two (Common)
Front curve (Common)
None (uncommon)
Single (uncommon)
Triple (Rare)
Back Curve (ultra-rare)
Back long Curve (ultra-rare)

-Eyes: Elxigns eyes are two different colors in each eye. They reflect which element they are most compatible with and what their normal eye color would be. Whichever element they're most compatible with will be on the bottom.
2 different colors (common)
Solid (Uncommon)
2 different colors, 2 different eyes (Rare)
Solid, 2 different eyes (rare)

-Disc: Disc color marks what Element the Elxingn obtains. How many pieces the disc are split into tells how strong they can control that given element. When Elxingns use their element these discs start to spin.
disc determine age. Each disc represents 100yrs of age. 
halo rings-2parts (weak-common)
3 parts (mild-uncommon)
4 parts (Strong-rare)
5+ parts (Strongest- ultra-rare)

-Necklaces: Necklaces show the element the other parent obtained that they did not receive. This is usually a way to show off. If an element is not popular to the Elxingn then they will not wear a necklace. 
With or without necklace (common)

-Ears:
pointed (common)
humanoid (common)
pointed curve/ect. (uncommon)

-hands: Another sign of when an Elxingn is using their power, their fingers will be tinted the color of the inherited power. If this happens but the Disc do not spin then it is just a warning sign. 
 
-Skin Schemes: Skin Color will determine of what blood they were born.
Scheme 1-2 (Common)
Scheme 3-4 (uncommon)
Scheme 5 (Rare)

Extra please read 
Characters can have as many extras as the creator wants! These are just the ones that will have rarity traits. (ie. you want them to have a lantern hanging from a horn. You can totally do that.)  
Objects hanging from Horn (common) / can add or take away at any time.
Liquid Halo (uncommon)
Xngn Halo (Rare)
Object halo (ultra-rare)