If you use a Spell/Trap effect to destroy "Stardust Dragon", you can use this card to negate "Stardust Dragon's" effect of negating and destroying the Spell/Trap card, and since "Stardust Dragon" cannot Tribute itself a second time nor did it succeed to negate a card effect, it cannot revive itself nor use it's effect to counter this card.
When equipped with "Safe Zone" you can prevent this cards destruction from battle or effects that target it, while also protecting "Safe Zone" with its own effect.
You can use this card in a Destiny Board deck to prevent your opponent from destroying your Spirit Messages.
Don't forget that this card's effect can be used when your opponent tries to destroy their own cards as well so this can throw a monkey wrench into their strategy quite well if used right.
This card is a wonderful counter monster against another monsters's effects that will negates and/or destroy your Spell and/or Trap cards, such like "Legendary Six Samurai - Shi En", "Naturia Beast", "Naturia Barkion", and any other monster that will activate an effect that destroys Spell or Trap cards on the field (even monsters that can destroy any card on the field, but by selecting 1 or more Spell or Trap cards on the field).