In developing mods for Warcraft 3 using its World Editor, we'd often have to create invisible dummy units for the same reasons, like to cast a spell as part of

In developing mods for Warcraft 3 using its World Editor, we'd often have to create invisible dummy units for the same reasons, like to cast a spell as part of a more complex custom hero ability. Always felt like a hack, but it's funny, surprising, and validating to learn that Blizzard essentially does the same thing in WoW.