User blog comment:NocturnalDelusion/Patching Things Up/@comment-4038132-20120429144104/@comment-5382783-20120430094619

It's not impossible to carry out, but it isn't carried out, and so I think its ideology can be tweaked. Nymphs of waters can't be too far from them. Land nymphs (such as grove or mountain nymphs) can't leave their territory. This would also apply to any underworld / olympus exclusive creatures or nymphs, such as the Lampades. Also, any water based creatures can't leave the water unless they're nymphs or Tritons/Tritonides. Laelaps can't leave their master/their prey, and so on.