I guess you can follow other clown decks. His clown deck is more whale than others, with 3 electro, 3 mirrors. Would suggest halfshut, enemy controller, shield spear/reinforcement as alternatives and crass clowns as replacement.
If you dont have mirror wall or sergeant, there's a lot of card that can be mixed to the deck above, like :
Dream Clown, Feint Plan, Sphere Ebola, Desert Sunlight, Halfshut, E-Con, Tragedy Or Xing Zhen Hu.
Guys, the douche who's commenting is not the deck creator. If you check in the other comments below, you'll find this same guy using the name and 🔥ing people. He's just a troll...