It's quite literally a part of the Jaws pylon that keeps them trapped in the Black Sea, and since they're also corrupted to various degrees by (Flottsørmir, and it works great against both the Shadowlith pieces and the Void Snakes) it would be cool if it had some unique effect maybe depending on the stage of corruption, at the very least Intimidation against Krigsfar and more debilitating effects against mutated enemies like Skærders such as dazing or temporarily disabling their hand-mutations.
