Capricorn

Capricorn 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
Erudite Rulers of thy façade Stone-faced before the blood of executions One day you will quiver and quake As your insides blaze in fury.

Second riddle
"A ça ira, ça ira, ça ira," will resound, A dire Twist of fate, To dispel darkness no more Now to break the necks of many.

Third riddle
Orphan tower, what has become of the rest? The start of a pilgrim's journey. Shreds of memories hang from the chimeras beaks: This one, pressure of the atmosphere. The other, alchemy.

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

Reference

 * Assassin's Creed: Unity