Board Thread:General Discussion/@comment-25926288-20160404010039/@comment-4839682-20160406175027

If Underbrooke is indeed meant to be a mirror of Storybrooke, and the mansion in question came over with Snow's curse, maybe Underbrooke just updated itself, without needing another spell or alteration from Hades (if that makes sense)

Like, Hades declared "Make this place like Storybrooke" and Underbrooke modifies when Storybrooke does, on its own.