I also like the idea of using this as a combat trick in case someone comes your way, you can make a big powerful instant and then kill the attacking creature that came your way
How card games solve for these constraints fascinates me
You do really want to reliably have something huge to cast with this because getting a free 6 mana creature or something isn't that big of a deal, especially when chapter 2 is meh and chapter 3 will cause your target to instantly eat removal
In high Energy count decks, Engineers Adjustments can be used as a semi-powerful draw engine (allowing the player to draw 4 cards when they discard an Energy from their hand)
That's because it grants all Toon monsters target protection from opposing card effects, plus it can banish the top card from its owner's Deck to prevent them from being destroyed
Many fans see it as a backstep, with a majority of players marking the official announcement as an unhelpful article