Powerful Void is an imbuement that can be applied to items of type Axes, Swords, Clubs, Wands, Rods, Bows, Crossbows, Helmets. When applied, it converts 8% of damage to mana with a chance of 100%.
Astral Sources
When imbuing an item with Powerful Void, the following items are expended:
25× Rope Belt, 25× Silencer Claws, 5× Some Grimeleech Wings
Notes
The ability to apply this imbuement can be obtained by finishing the Heart of Destruction Quest or by defeating the Soul of Dragonking Zyrtarch during the Forgotten Knowledge Quest.