I want some in game explanation about why they work. I has to be the case that the only work for us otherwise they would be transportation hubs. Or the goblins in the blighted village could transport their army to grove without problem.
Gale tells they are Netherese, perhaps they were tainted by shadow magic and they are responding to the shadow magic holding back the transformation? Perhaps the talkative skeleton could provide us with the Netherese phrase that activates them?
