Laestrygos gave you a Piece of Aegis and said Anusis in Sanctum could combine it with Laestrygos’s Orb.
Step 1. Take Laestrygos’s Orb, a Piece of Aegis, and AnusisA master craftsman who ascended late in his life. He knows about all legendary swords, and can be found in Artisans Hall.‘s fee to Sanctum. (You need to collect: Laestrygos’s Orb)