This card can be used like "Exiled Force" and Tribute itself.
This card's effect to destroy monsters can be used as many times as possible each turn. So Tributing Six Samurai monsters that are Special Summoned by "Double-Edged Sword Technique" will not only allow you to destroy 2 of your opponent's monsters, but also prevent damage to your Life Points from "Double-Edged Sword Technique's" effect. You can only use the effect of it on your turn
You can tribute a monster that has the ability to destroy your opponent's back row instead of attacking to destroy 2 cards at once.