Homebrew Dark Children Species Details

Spawned from the darker areas of the worlds, these mysterious children(?) have many creepy abilities.  They prefer to go undetected and strike with deadly force when they show themselves.  Being caught puts them at quite the disadvantage if their weaknesses are known and exploited...  They spend the start of their lives learning how to adapt and blend in, quick learners at this.  After a few years, they venture out and start acting on their desires.  No matter what, they always cast the shadow of a child... (This point could be used as an RP or Game Mechanic for spotting one if desired)

Dark Children Traits

Shadow, Stealth, Evasive

Ability Score Increase

+2 Dex, +1 Wis

Darkvision

60ft Darkvision, which pierces Magical Darkness

Hiding Face and Body

Gain Proficiency in Deception and Stealth

Hidden In Shadows, Unseen by All

You may use the Hide action even if only lightly obscured (It does not matter by what) as long as shadows are being cast on you. You may even do so with just cloud shadow, but you have disadvantage on such rolls, unless the cloud shadows result in light that would require nightvision or darkvision to see in.

A Guise to Hide In

You know the Disguise Self spell, and may cast it on yourself at will.  Your mastery of it allows you to change yourself to look taller than you actually are (about the size of the average human max).  At level 3, you learn the Darkness spell, which you may cast once.  The usage of Darkness is reset after a Short or Long Rest.

Harmed by the Light

Vulnerable to Radiant Damage