Powerful Venom is an imbuement that can be applied to items of type Axes, Swords, Clubs. When applied, it converts 50% of physical damage to earth damage.
Astral Sources
When imbuing an item with Powerful Venom, the following items are expended:
25× Swamp Grass, 20× Poisonous Slime, 2× Slime Heart
Notes
The ability to apply this imbuement can be obtained by defeating The Enraged Thorn Knight during the Forgotten Knowledge Quest.