Quote Originally Posted by Dirti View Post
They stack under Diurnal why not Nocturnal. You basically loose the aspected part of the heal under Nocturnal. If it is too much damage reduction then add something else or reduce the reduction a bit when stacked.
If my memory isn't completely bad, they're adding a shield meter or something like that with the expac. This implication is this will allow shields to stack, but the total amount of shielding that can be on a character will be limited.

With more details coming on the battle system soon, hopefully we'll find out if these implications are right and see exactly how it works.