
TC evolves into Lord Foul and to engineer a particular end-stategy, he guides and manipulates the players, including himself, to do what he needs them to do to further the stategy.
OK so how can he do battle with himself? He battles his future/past self via the time-shifts of Caesures...the whole TC Chronicles and Lord Foul persona so far, could just be to engineer Joan to the position where the caesures could created, allowing him to fulfill some other destiny involving the Creator and who knows who else, maybe to re-create himself in the real world by changing time there?
Wooooaaahhhh! I hear you say way out there....yes but its been one of those days!