Oh... I read the help a loooong time ago when I dabbled in the game with another account and now I saw the elemental advantage graphic and just assumed I'd get extra dmg from dark as light and viceversa. Just checked it again, and yeah, only player deals extra dmg. Nice... and yeah, now it makes sense those eidolons get that little bit of disadvantage. In any case, I'm happy with water, love debuffs xD. If I ever get strong units from one of those elements I hope it's dark, I remember liking more himes from that element, in fact, I don't remember liking almost any light hime I ever had o.o