This card can catch the opponent off guard if used against monsters like "Cyber Dragon Core" or "Blue-Eyes Alternative White Dragon" when they activate something like "Machine Duplication" or "Polymerization", as those monsters will lose their effects that change their names, and the activated effect will either wear off or resolve in an unwanted manner.
This card can be an efficient and proactive way to fulfill the activation requirement of "The Iris Swordsoul" as soon as turn 1. Not only a monster effect(s) will be negated, but "Sword Master" will put pressure on the opponent as long as they will have to consider that its last effect can disrupt their combo.