Berserk?

The garden in its better days.

Hell and damnation.
Can anyone please, please tell me which piece of equipment gives Dagger her Berserk ability? Or is it not even Berserk? I only know that there's a gap between Confuse and Float, and that it pisses me off supremely. Every one of my characters has learned every single ability they can learn except for Dagger, who has that one last, gaping blank there.
Damn it, damn it!

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katoo is: bored by habit, idle by nature.