Blizzard own your Warcraft 3: Reforged custom maps, but that's no surprise
It’s come to everyone’s attention that Blizzard have revamped their User Generated Content policy just in time to launch Warcraft 3: Reforged, and claim ownership of all maps made in its editor. The new legalese, while definitely overbearing and disappointing, shouldn’t be a surprise: they started tightening legal claims years ago with StarCraft II.