Void/1.03.24

Dark Elf
The Void is a research building that doubles as a very sturdy defensive structure, comically out-performing some race's main towers. The building even offers a lot of researches that encourages you to build more of them to obtain those skills in good time. They are also small in size, almost matching that of a normal tower. With its high defensive stats, respectable offense and dirt cheap cost, one could argue that the Void is broken! However, they cannot be garrisoned and interesting, they don't stop defeat, meaning your foes wont need to destroy them to vanquish you from the game. These two factors may help "balance" them, but regardless, they do certainly help defend your base and should be built in masses to support the main Dark Elf towers, which are naturally frail.