Justice League Dark (2017)
Dir. Jay Oliva
I wonder how many names were in the hat when the creative team were struggling to come up with a catchy moniker for their new magic-themed 'League' collective. Given what they settled on, the others mustn't have been much good at all. But despite the name, the team itself is an interesting bunch of individuals.
Their genesis in animated form occurs when a spate of supernatural happenings perturbs the regular
Justice League.
Batman is chosen to enlist the help of folks who understand the workings of magic, in the hope that they'll be able to get to the bottom of the mystery.
It's an original story, not adapted wholesale from any of the existing comic book adventures, so deserves credit for that, if nothing else.