Saturnus

Saturnus was a virtual representation of one of Arno Dorian's genetic memories, relived by a Helix initiate through the Helix Navigator.

Description
Arno solved several riddles to find a part of the Nostradamus Disc.

First riddle
I wield two blades, Flanked by Justice and Law. I strike true and fair, hour by hour, For monarchs and peasants alike.

Second riddle
Encircled by 24 petals of light, Our Lady of the Rose watches, silent as stone, O'ver believers below. Look to the Lady lit by the setting sun. Look to the blossoming rose.

Third riddle
Stay with Our Lady, standing between flowing waters. Count one for each book of the Pentateuch from rose to transept. Five arches, five wide-open eyes, five nightmares. The last sits atop our treasure: The gate to the infinite.

Outcome
Arno retrieved one of the fragments of the Nostradamus Disc.

Reference

 * Assassin's Creed: Unity