Ep21-The Culprit-The Tamers of shadow
#21 of The Tamers of Shadow
So, maybe it's a member of the nightwing family?
When trying to figure things out the team tried to figure out who may be behind all this. Nate has said there are a few other uncles and aunts who live in town and maybe it could be one of them. It also could be a cousin of the family who could be behind all this, but it would be hard to trace things back as all magic being from the family is the same.