More importantly, it forces your opponent to discard a card from their hand, which is not only a good disruptive strategy but lets you mitigate some cards that affect both players, like Iono
If you want to use Attractions in Limited formats (Booster Draft and Sealed Deck), your Attraction deck must contain at least three Attraction cards and may contain duplicates
#4 So, who sold it to who
Being able to play cards your opponents discard is huge, one of the reasons why Tergrid, God of Fright is so frightening. #43
The first place to look is in the lower left corner of the card see that three-letter code
The more complex answer is to find ways to mill yourself, turning your graveyard into a secondary resource