You temporarily link the fates of any two creatures, if both fail their
saving throws. If either linked creature experiences pain, both feel it. When one loses
hit points, the other loses the same amount. If one takes
nonlethal damage, so does the other. If one creature is subjected to an effect to which it is immune (such as a type of energy damage), the linked creature is not subjected to it either. If one dies, the other must immediately succeed on a Fortitude save against this power's save DC or gain two negative levels.