Like other Pokmon sets, 151 has had plenty of collection products - unique collections that bundle up boosters with other goodies like promo cards, binders, and more
Instead of Power Tool Dragon, he can also choose to Synchro Summon Black Rose Dragon. Then he can remove a Plant monster from his Graveyard to switch one of his opponents Defense Position monsters to attack mode, and lowers its ATK to 0
You're going to be challenging and leaving your key pieces open to retaliation, and don't have a lot of ways to avoid that
Control decks want to be able to slow down the game by handling early aggressive plays that might do critical damage prior to mass removal, they want to be able to do multiple things in a turn and they want to be able to snipe out tenacious creatures that might survive a mass removal spell
Which like many obvious things is not actually the optimal thing
In moving forward, it would probably be a good idea for you to have an idea of what's the ideal end state for your archetype