VR Online Game: the Only Bard

There is such a game called "Dungeons and Dragons". There is such a game rule called DND. There is such a VR online game that uses modified DND rules. There is such a person who can change the judgment result of the game at will. The attack can't hit? Changed! Spells not maximizing damage? Changed! Is the enemy's attack power super strong? Changed! A "universal dice" is about to change the fate of the protagonist...