While he is handy with any blunt object, Gourry's biggest contribution to a fight is his swordsmanship. Not only does Gourry reveal himself to be a nearly invincible swordsman, he is found to be the owner of the Sword of Light, a legendary weapon which, when not possessing a metal blade, produces a blade of pure energy, which Gourry can activate by voice. The energy blade, which functions like a lightsaber from "Star Wars", can cut through almost anything and even absorb, store and then release magic spells against his enemies. When Phibrizzo released the seal on Sword of Light that withheld its full power, it was capable of firing beams of pure energy as well. His swordsmanship is downplayed as the series progresses in favor of the magic, but one occasion when he was placed under a spell and turned against his comrades he proved to be nigh unbeatable. It is explained that the Sword of Light channels and amplifies the willpower of the wielder to create the blade, which would explain his enhanced power when under mind control as his will would have been reinforced by the one controlling him. The sword was later revealed to be not a weapon of light, but a weapon more closely associated with the mazoku, specifically Dark Star.