Dark Curse

Dark Curse (暗い呪い,Kurai noroi) is a Curse that involved the manipulate of matter in the air that is then converted into dark energy for the user to control.

Description
Dark Curse is a curse used by Seiji Kaiju who through its use founded the strongest dark guild in Rudonia. This magic allows the user to freely control Dark energy, which is made by slowly converting the energy around him. once the conversion is done he is then able to freely manipulate the matter to forms, be it sold shapes or blasts like attacks. Upon its uses there is a distinctive crackling sound. this is also an indicator that an attack is ready.

Weakness
The big weakness is the amount of time it takes to convert matter into a Dark version, This can easily be capitalized on, once discovered. The other weakness is the fact that if the matter is destroyed by powerful attacks it will then leave an opening to be exploited.