Morgulking he would not have done that, The
Istari are NOT ALLOWED to show themselves in forms of power or majesty, which is why they look like old
men, and they are forbidden to match
Sauron's power with their own Power, their mission is to unite men and
elves against Sauron, but not use their own power against him, at least not any more than is absolutely necessary.
And Morgulking you speak of
Gandalf having trouble taking on the
witch king, that is for the reason's that I stated above, he's not allowed to use his full power, and also because in
Middle-Earth he is Gandalf, not
Olorin, Olorin in his true
Maia form could take on the witch-king easily.
That being said, I'm still not sure who would win, because Sauron
is very powerful. But maybe Olorin could take him on, because if you remember when he becomes Gandalf
the White he says "none can now defeat me save the enemy himself," or something along those lines, so that leads me to believe that Olorin could beat Sauron, but I'm not gonna vote on this cause I'm still really not sure.
