Board Thread:General Discussion/@comment-26392556-20150410163652/@comment-24674051-20150417134834

I don't know. In Ariel, it was mentioned that mermaids can travel through the realms. It did not say anything about drawing objects from other realms. Ariel had to physically travel to Storybrooke (though to be fair, Gold had the Box hidden in a way that might have prevented magical recall).

Ursula, on the other hand, could CALL for items that were in any realm. So it seems to be at least a little more powerful than the typical Mermaid skill. and I would classify all of it as Magic, just that it's inherant magic.

Also, I would say that Ursula's singing voice seems to have some magical quality to it.