Also, is there a reason why I need the second 'Black Quill'? I got two for the quest, the first one got used and the second one stays in the inventory and connot be dropped.
First three puzzles you guess. In the lower room of the fourth puzzle there are runes, in the upper room there are switches. Each glowing rune corresponds to a turned-on switch, each non-glowing rune corresponds to a turned-off switch. Note, that runes and switches groups are reflected, like the book you've met earlier says.
That helped, thank you.
Found it, thanks! Got a set item - nice.
Also, is there a reason why I need the second 'Black Quill'? I got two for the quest, the first one got used and the second one stays in the inventory and connot be dropped.
First three puzzles you guess. In the lower room of the fourth puzzle there are runes, in the upper room there are switches. Each glowing rune corresponds to a turned-on switch, each non-glowing rune corresponds to a turned-off switch. Note, that runes and switches groups are reflected, like the book you've met earlier says.