While its always nice to cast a huge Finale of Devastation, theres still plenty of value to be had in casting this spell for a smaller number to pull out important creatures for the sake of value or as part of a combo
We could probably have found room for Gwen Stacy and Miles Morales in a non-Spider-Man specific set, but there wouldnt have been room for Aunt May. McCall says that designing for a Universes Beyond set flips the worldbuilding on its head, in that a typical Magic set needs its cards to lay the groundwork of its location and setting while also being fun to play with in order to get players on board, whereas most people already have some familiarity with a character like Spider-Man
Once its on the battlefield, it often changes the texture of an entire game, turning the card advantage that most decks look to create into a liability, no matter the plan of your opponents
For example, characters would fuse monsters with spells or directly summon traps from their hand
you have to gift an extra turn