each dream, probably has a counterpart, ie dream of unlife with dream of life(which must have been the most powerful because it would enable the making of new species and i think that only wyrd could handle this power) or the dispersal dream and it's counterpart(what would this be?)
anyway though, each dream has a counterpart like every action has an equal and opposite reaction(maybe) so that when a human uses one of these dreamswithout the use of the other, the cycle is being offset like taking rocks out of a scale on only one side, and the leveler is created to take the caster and undo all that he has done in order to keep the balance. kind of like a failsafe as if wyrd planned for the dream to break.
i no longer think that wyrd still has any controll overthe world of myth.
Gothmog