This is why I prefer Tumblr to post fanart, people are way more respectful (at least in my experience)

+ are anger and loneliness.

In the case of Val the nightmares feed on her fear of losing control of her powers, causing the death of the people she loves.

The constant pains and nightmares can end not only with the physical health but also mental stability of anyone.
This curse takes advantage of their victims negative emotions to slowly take complete control of their bodies.

In the case of Val the two emotions that cause her to worsen her state +

Because of this she was "cursed", that's why she has black hands.

The "curse" affects individuals in various forms.
The Shadow Curse may not have instant deadly effects on people but in the long run the consequences of having this curse is worse than death itself for the majority of the victims.

Val suffers from something called the Shadow Curse due to an attack she went through when she was a baby. A group of Shadows attacked her village one night killing many people, between them her parents who were trying to protect her.
Despite her parents efforts she was touched by one of the shadows.

Hi! 💜 my name’s Alyssia and I’m a mixed black artist whose dream is to have my own cartoon show someday! I hope to one day talk about societal issues through cartoons meant for young teens!

Thanks for the artshare!