Dark Magical Kid

Dark Magical Kids is a form Magical Girls & Boys can take, this form is the worst traits of the Magical Kid took up to 11

How You Become A Dark Magical Kid
This happens when a Magical Kid gets so stressed, scared or otherwise hurt that they break mentally at this point their powers overactive and take over the user, they become the worst version of themself as a way to protect themself from anymore harm, so maybe someone who already has their head in the clouds will just flat lose track of reality meanwhile someone who's quick to strong feelings is likely to have wild mood swings

Power
As a Dark Magical Kid the user's power goes up from their normal self, this is because of the fact that the feelings tied to Dark Magical Kids tend to be stronger then normal feelings

How To Get Back To Normal
To get back to your normal self or become a Witch is to start feeling safe again, be this from pushing everyone away or being reminded that you have people who care for you. As long as you feel safe again you'll go back to not being a Dark Magical Kid