By consistently putting opponents to sleep, you can dictate the pace of the game and create opportunities to outmaneuver tougher decks like Pikachu ex and Mewtwo ex
Still, in formats where this is viable, it does represent up to one additional Mercenary token per turn and a buff that makes it very difficult for your opponents to block
Alternate art cards that you are guaranteed to get in a special collectors box
While reprints are expected as soon as July, and should continue for a while given the Final Fantasy expansion is part of MTGs standard set of cards (and thus legal in all tournament play), the difficulty of not only finding cards at the moment, but actually being able to afford them, has been a bit of a buzzkill.
Dumping your hand to force your opponents to sacrifice a bunch of creatures just doesn't feel good, especially when you have to lose it blindly
You may ignore a Trap's alternative cost condition and simply cast it for its normal mana cost