Half-Elf

Walking in two worlds but truly belonging to neither, half-elves combine what some say are the best qualities of their elven and human parents: human curiosity, inventiveness, and ambition tempered by the refined senses, love of nature, and artistic tastes of the elves. Some half-elves live among humans, set apart by their emotional and physical differences, watching friends and loved ones age while time barely touches them. Others live with the elves, growing restless as they reach adulthood in the timeless elven realms, while their peers continue to live as children. Many half-elves, unable to fit into either society, choose lives of solitary wandering or join with other misfits and outcasts in the adventuring life.
The People. To humans, half-elves look like elves, and to elves, they look human. In height, they’re on par with both parents, though they’re neither as slender as elves nor as broad as humans. They range from under 5 feet to about 6 feet tall, and from 100 to 180 pounds, with men only slightly taller and heavier than women. Half-elven men do have facial hair, and sometimes grow beards to mask their elven ancestry. Half-elven coloration and features lie somewhere between their human and elven parents, and thus show a variety even more pronounced than that found among either race. They tend to have the eyes of their elven parents.
Half-elven have no lands of their own, though they are welcome in human cities and somewhat less welcome in elven forests. They enjoy the company of other half-elves, the only people who truly understand what it is to live between these two worlds.
In most parts of the world, though, half-elves are uncommon enough that one might live for years without meeting another. Some half-elves prefer to avoid company altogether, wandering the wilds as trappers, foresters, hunters, or adventurers and visiting civilization only rarely. Like elves, they are driven by the wanderlust that comes of their longevity. Others, in contrast, throw themselves into the thick of society, putting their charisma and social skills to great use in diplomatic roles or as swindlers.

Religion

Many half-elves are highly pious and devout, due to the circumstances of their life and finding temples to be one of the few truly accepting places for them. The gods they follow depend on where they live, but they can be found worshipping almost any and all gods.

Values and Taboos

Like elves, half-elves value their traditions but also value their freedom, due to their human half. They are stuck in a world that both loves their company and rejects their selves. They are mistaken to be one half or the other, and rarely seen as both. They struggle for acceptance in a world that simply does not know enough about them.

Half-Sylvarin

Both Sylvarin and the more common XXX are able to create half-elves through birth with a human. While those bearing XXX blood are far more common due to the sylvarin's attitude toward humans, the odd half-sylvarin do end up being create occasionally. These oddities are doomed to roam the world with few friends due to the reputation of the sylvarin among other races, but can sometimes convince others to accept them.
Half-Sylvarin bear the horns of their graceful ancestors, albeit much smaller and are split into two categories - the highblooded and the thinblooded.

Highblooded Half-Sylvarin

Highblooded refers to a half-sylvarin who had a sylvarin ancestor within the last 2 generations. These beings possess larger horns than their thinblooded relatives and have the hooves and legs of their sylvarin ancestors. These are the only half-sylvarin even considered to be acceptable to the Sylvarin, but even then it is rare for one to be accepted into their kingdoms without a fullblooded guide vouching for them. These half-sylvs typically act far more like their sylvarin relatives, being more lawful with stronger morals and codes.

Half-Elf Traits
Your half-elven character will have the following traits.

Ability Score Increase. Your Charisma score increases by 2, and two other ability scores of your choice increase by 1, and two other ability scores of your choice are decreased by 1.
Age. Half-elves mature at the same rate humans do and reach adulthood around the age of 20. They live much longer than humans, however, often exceeding 180 years.
Alignment. Half-XXX share the chaotic bent of their elven heritage. They value both personal freedom and creative expression, demonstrating neither love of leaders nor desire for followers. They chafe at rules, resent others’ demands, and sometimes prove unreliable, or at least unpredictable.
Half-sylvarian share the lawful attitude of their sylvarian heritage. They value strict order and the natural progression of ranks, demonstrating love of leaders and desire for followers. They tend toward rules, resent others’ demands if they perceive them as below themselves, and sometimes prove unreliable if they do not respect others. They often share the evil and selfishness of the Sylvarin, but their human side can sway that heavily.
Size. Half-elves are about the same size as humans, ranging from 5 to 6 feet tall. Your size is Medium.
Speed. Your base walking speed is 30 feet.
Darkvision. Thanks to your elf blood, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.
Fey Ancestry. You have advantage on saving throws against being charmed, and magic can’t put you to sleep.
Skill Versatility. You gain proficiency in two skills of your choice.
Languages. You can speak, read, and write Common, Elven, and one extra language of your choice.

Thinblooded Half-Sylvarin

Thinblooded half-sylvarin have not had a sylvarin progenitor in numerous generations and their blood has become primarily human. Their horns are typically only about a foot long and they have human-like feet rather than the hooves of the sylvarin and their highblooded relatives. They are seen as a disgraceful thing to the sylvarin - a being that had the ability to be pure and was instead wasted. The thinblooded are less like sylvarin typically, being less lawful and therefore having fewer or weaker morals and codes. This is not always the case, but they are a more varied people than the fullblooded Sylvarin and their highblooded cousins.