Theres a few good reasons for that
then the Puppy-Loving Girl will look at the top 4 cards of your deck, and bring all Puppy Pile Pokmon to your hand (and shuffle the rest back to your deck)
Some attacks also have conditions, which are in the text below the name
Attack #2: [2GG] Megaton Lariat (140) Related Products Pincurchin V - 072/192 - Ultra Rare Rebel Clash Near Mint 1 In Stock Near Mint 1 In Stock Near Mint 1 In Stock Boss's Orders - 189/192 - Full Art Ultra Rare Rebel Clash The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock Copperajah V - 136/192 - Ultra Rare Rebel Clash Near Mint 1 In Stock Near Mint 1 In Stock Near Mint 1 In Stock Boltund V - 067/192 - Ultra Rare Rebel Clash The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock The Card Nest Exclusive - NM 1 In Stock Oleana - 163/192 - Uncommon Rebel Clash Varied Condition
For example, if you choose Ondu Knotmaster, Throw a Line will still cost only to cast.
In the side deck you can play many handtraps like Droll, Ally of Justice Cycle Reader or Ghost belle but I decided to play Nibiru as unique handtrap, dark ruler no more that can be useful against some rogue combo deck, twin twister, Karma cut that can be very useful in mirror matchs or against other decks that are based on a boss monster or a monster played in many copies