Special Summon that target, and if you do, all face-up monsters your opponent currently controls lose 200 ATK for each Beast, Plant, and Winged Beast monster currently in your GY, until the end of this turn
There are also hard perfect fit sleeves, but these are made out of sturdier plastic and could add a significant thickness to your final double sleeved card
That would help get higher cost cards like Basil (Disguised Detective), Tadashi Hamada (Baymax Inventor), and Yokai (Scientific Supervillain) into play, and Yokai is especially deadly, as you can play Microbots for free and then gain additional cards after questing depending on the cards in your opponents play area
Spell Spellbook Star Hall Continuous Spell Each time a "Spellbook" Spell Card is activated, place 1 Spell Counter on this card
All decks that want to jump through hoops need to get to turn 8-10 to really be in their element, and Id encourage you to try building a deck thats a little more complex in game plan if youre struggling to come up with something to play at slightly slower tables