Aquarius

Aquarius 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
The Poor fellow-soldiers of Christ, Atop their Stone Dungeon, Marked their allegiance In Jerusalem's Direction.

Second riddle
At the source of life, The Full-Moon shaped basin Quenches the thirst Of Solomon's defenders.

Third riddle
In the entrails of the Earth, Between the twin flames, Lies The Final resting place Of the first Grand Master.

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

Reference

 * Assassin's Creed: Unity