Not only will this prevent all the damage it wants to deal, but you get 10,000 2/1 fliers
Its a nice way of storing your cards and collection, and there is a new one each set
In fact, long story short, the reason why I ultimately shut down FakeCard.com was because I saw myself at a crossroads: do I continue to channel my artistic energy into a website that I can't earn a livable wage with (especially considering stuff like Patreon and Etsy did not exist for fans to support their favorite artists with) or do I switch to an artistic medium that may not have a popular IP like Pokmon behind it but at least it's mine to do with as I please
The deck could immediately win upon resolving Splinter Twin on its Exarch, so even though Splinter Twin did nothing until the turn it won the game and extra copies in hand would be dead, it was worth it
Failing that, blue decks want to have untapped mana on their opponents turn, and this lets you do that