What is a "Devil's Advocate"?
When you analyze the phrase itself, a lawyer for Lucifer (Satan, the Devil).
But the term has been used to represent a person or group that takes a position that is contrary to popular opinion (and the popular opinion at times may be so fickle, that certain people may not have a choice but to take a contrary position).
The opposite of this would be an "Almighty's Advocate" which has been labeled a "Prophet". A Prophet is an individual or group that speaks their mind regardless of whether it is popular or not. A true Prophet is anointed by Almighty, Himself. A false Prophet is not.
So yes, a Devil's Advocate and an Almighty's Advocate may at times overlap in certain instances. A Metatron's Advocate perhaps?