So, it has the ability to communicate with others - potentially all others - and it may be powered by magic. [ "Story" magic. Zelda nods slowly, committing these 'facts' to memory. ] Is that all it does? ... Not that it isn't incredible, this feature. I've never seen anything like it!

[ Not in her lifetime, though they may have had a similar stone in some piece of Hyrule's history. ]