Mainly because booms are sudden and unexpected
When you copy a modal spell, you copy all the chosen modes of the original , though you may select new targets
After unzipping the binder, youll find twenty 12-pocket pages sized for standard trading cards in side-loading pockets, allowing you to store up to 480 cards in Ultra PRO Deck Protector sleeves
More importantly, the creature card has a useful ability in that whenever it attacks or is targeted by an opponents spell, it can deal three damage to each opponent (making it potentially useful in multiplayer formats such as Commander) or exile (essentially remove from the game, in Magic: The Gatherings lingo) the top two cards of the players deck - the player then picks one of those two cards, which they can choose to play until the end of their next turn
They deliberately keep things simple to show you the ropes, and are a great foundation on which to build from