Foxfire

"Let us see which of us needs to be humbled this time around," Veyrin declared.

And with a twang, the first arrow of the fight shot forward.

Devil's response was a simple, fluid step to the side. The arrow whistled past, slicing through the air where he once stood, prompting him to let out a chuckle.

"Didn't we agree to take each other seriously?"

Veyrin flashed a small smile. "You have my apologies. Please, allow me to correct my mistake. [Foxfire Culling]."

A bright light ignited around his bow. The aura of the spell spread in a single moment, moving along the bowstring as he drew another arrow, its tip now coated in unnatural blue flames.

This was no ordinary fire. It did not simply burn. It disrupted. 

If one was hit with such an enchanted arrow, their mana usage would be restricted, and their spell usage would be limited as it interfered with magical flow.