Homebrew Crimson Demon Species Details

(Disclaimer, originally created by Smexitroth, this version merely is somewhat nerfed for balancing) 
History

Long ago, a brilliant researcher in a technologically advanced nation was commissioned to modify a group of humans, with the goal of expanding their magical ability. These humans were rather eccentric, requesting that their eyes be made red and glowy, and asking for a suitably "cool" name for them to be known by. The experiment was a success, and the Crimson Demon Clan, as they are now called, awed the nation with their magic prowess, inspiring them to take on even more ambitious projects. While the nation was eventually destroyed by one of these projects, the Crimson Demons lived on, producing generation after generation of talented magic wielders.

Society

Crimson Demons generally live in their own villages, although outsiders are welcome to visit. To many outsiders, though, their behavior is viewed as rather strange. Growing up, children are taught that the number one purpose of Crimson Demons is to "look cool." When introducing themselves to strangers for the first time, it is customary to strike an awesome pose and loudly announce one's name and profession/goal/notable achievement(s). They are also prone to accompany the spells they cast with dramatic phrases and chants; the more esoteric and incomprehensible it is, the better. Despite these somewhat quixotic tendencies, Crimson Demons possess very high intelligence, and when engaged in conflicts they can easily outwit and disorient enemy forces as they unleash their magic upon them. In addition, they have little concern for collateral damage in their own villages, since they can easily make repairs with their magic. The combination of these traits make invading or conquering a Crimson Demon village nigh impossible without some sort of defense against magic.

Crimson Demon children are taught using a public education system, and graduate once they become proficient with magic. While some take up jobs and professions around their village, it is also common for new alumni to set off in search of adventure. Due to their reputation for potent magic, they are usually in high demand among adventuring parties.

Crimson Demon Traits

Crimson Demons have the following traits.

Ability Score Increase

 Your Intelligence increases by 2, and your Charisma increases by 1.

Smarter than the Average person, and from a boisterous family, you catch people's attention more than most others.

Age

Humans reach adulthood in their late teens and live less than a century. Crimson Demons are modified, but still human.
Their life-span is about the same.

Alignment

 Since their culture emphasizes "coolness" above all else, Crimson Demons tend towards chaotic alignments. They won't hesitate to disregard rules or societal conventions if they sense an opportunity to do something "awesome," although they are generally accepting of the consequences of their actions.

Size

Humans vary widely in height and build, from barely 5 feet to well over 6 feet tall. Regardless of your position in that range, your size is Medium.

Speed

Your base walking speed is 30 feet.

Languages

You can speak, read, and write Common and one extra language of your choice. This choice is recommended to be exotic.
This reflects the Crimson Demon's Eccentric nature.

Magical Erudite

You gain proficiency in the Arcana skill, and if you do not have proficiency in the History skill, you are considered proficient when making a History check related to magic or magical items.

Indomitable Will of the Fearsome Crimson Demons

When an effect forces you to make a saving throw to avoid being frightened, charmed, or stunned, you can choose to replace the ability modifier for the saving throw with either your Intelligence or Charisma modifier. You only apply proficiency if you had proficiency with the original saving throw ability.

Release of the Cursed Power Sealed Within

You can draw on your innate magic reserves to amplify the power of your spells, although doing so puts a drain on your body. When you cast a non-concentration spell using a spell slot of 8th level or lower, you can raise the effective level of the spell by one. Provided the spell level is one you have. This grants you 1 point of Exhaustion in turn.
Alternatively, you can cast a spell one level higher than your maximum spell slot level. Provided you cast using your highest spell level. 

Traditional Crimson Demon Clan Introduction

 You know the Thaumaturgy cantrip and use it excessively, especially when introducing yourself.