The Nautilus Blade is a Famed Cursed Blade from El Patron's collection of cursed blades. This unique and powerful blade offers the user Cursed Thunder and Critical Strike abilities while boosting one's Flourish combo attack. This weapon is the only Famed Cursed Cutlass with the Critical Strike ability and the Cursed Thunder ability. It requires the wielder to be a quite trained swordsman to use. Like most Cursed Blades, the Nautilus Blade's movement is followed by a black trail.

• Abilities: Cursed Thunder 2, Critical Strike 2, Flourish +2
• Attack Power: 71
• Level Required: Sword 23
• Resale Value: 228 Gold
• Cost: Can be found in the Loot Skull Chest after defeating El Patron and in Loot on Ravens Cove and Isla Tormenta after completing the Raven's Cove Story Quest.