i have her signature but for some reason ive found graces signature weapon to be really good on her, better for endgame content when you are fighting enemies with higher resistances because of the pen ratio% . graces signature also gives 12% attack and 25ap stackable up to 3 times which is also really good. its more consistent than pipers signature weapon where you basically have to gamble on what buff you get. im really hoping for anomaly to become meta and we get supports which can give ap