Necron's Blade

Necron's Blade is a sword crafted with 24 Wither Catalysts.

Necron's Blade is used in 4 recipes as it is the unrefined version and can be refined into 4 other swords.

Essence Crafting
This can be upgraded with Wither Essence. This sword has 4 refined versions called Hyperion, Astraea, Scylla and Valkyrie.

Each refined version is crafted using their respective precursor relic dropped from Giants that spawn in The Catacombs - Floor VII blood room. Each of the refined versions also specialize in different classes, for example Astraea is a tank sword that gives more defense while Valkyrie is better used for damage with its higher damage, strength and ferocity.

Furthermore, the refined swords keep the +50% damage to Withers ability while adding a new ability that grants the sword +1 Damage and +1 class specific stat per catacombs level to the sword.