Board Thread:Show-Related Questions and Answers/@comment-26186122-20170508163745/@comment-25926288-20170508170252

Zalvukalic wrote: The Darkness is. It is the darkest thing of all things that's why it's called the darkness, so your answer is Rumple, Fiona may seem the darkest... But if so why did they create a DO at the first place Not necesarily.

The greatest purveyor of any magic would be the Deities. But I assuem we are talking human mages. Otherwise, I suggest this thread:http://onceuponatime.wikia.com/wiki/Thread:322781