It can prevent your opponent's combinations by taking off one of his/her cards.
It lets you draw a card.
You can dictate the pace of the game if used in a perfect timing.
Basically, it has the same effect for you and your opponent, with you using a resource.
It can disrupt your own combinations if used at a wrong time.
It lets your opponent draw a card.
It requires a good timing in order to capitalize with this card.
Tips, related cards, skills
Use Dragged Down into the Grave if you have an unusable card with it.
You can use this at the beginning of the battle to immediately learn the kind of deck your opponent is playing.
You can use Exchange after it when you see a card from your opponent's hand that you needed.
Use this card if you know that your opponent has combination cards. E.g. Your opponent summoned Sonic Bird then he/she took a Ritual Spell Card. Remove the Ritual Spell Card to prevent the Ritual summon.
Reveals your hand for effect / Reveals your opponent's hand / You draw cards / Your opponent draws cards / Discards for effect