I'm a big fan of the Sorcery series, with part 3 being my favorite.
This one is an appropriate ending for the series. It's huge, absolutely huge compared especially to part 1, and the magic you can gain here is powerful and mysterious.
The ending sequences can be nervewracking and difficult. The art is great, and the music good.
While I like this episode, I still prefer part 3, as part 4 is a bit one-note with its feel of a final confrontation.