Wither Catalyst

The Wither Catalyst is a item that can be used to upgrade or craft multiple items including the Wither Relic, Necron's Blade, and the Catacombs Expert Ring.

Obtaining
The Wither Catalyst can be obtained from Gold Chests and above in The Catacombs - Floor VII. It costs to open from Gold, Diamond, Emerald, and Obsidian Chests, and  to open from Bedrock Chests.

Usage
This item can be used to craft 3 items, of which are the Wither Relic, Necron's Blade, and the Catacombs Expert Ring. 56 Catalysts are required to craft one of each item directly requiring them, and 128 are required to craft all items requiring them, including all 4 refined versions of Necron's Blade (Hyperion, Astraea, Scylla, and Valkyrie).