JJK
Someone reincarnates as ranni the witch from Elden ring
She can have high curse energy since ranni's spell cost a lot of mp
Rannis dark moon makes a moon to be launched at enemies and dispels all sorcery in its path
Her domain expansion can look like her ending
She could be a curse with four arms or can be a sorcerer who put their soul into a doll
Possible curse weapon : sword of night and flame - it can shoot a constant laser and can make a wave of fire when swung