Amazoness Sage destroys spell/trap cards as long as she stays on the field after attacking. (You do not necessarily need to inflict damage to activate its effect )
Toy Magician destroys spell/trap cards when flipped face-up from face-down position. Having multiple face-up Toy Magicians on the field will allow it to destroy more spell/trap cards on the field.
Sergeant Electro is able to disable a face-down spell/trap card that your opponent controls. This effect lasts as long as the same Sergeant Electro is present on the field. This will persuade them to destroy your Sergeant Electro with their monster which will not end up in their favor as you have counter cards such as Mirror Wall.
This card can replace a copy of Sergeant Electro as it is able to lock 2 face-down spell/trap cards instead of one at a time. However, it can easily be destroyed by Twister which is commonly used in most decks.
This card can replace a copy of 4-Starred Ladybug of Doom. It functions similarly to 4-Starred LadyBug of Doom except that it counters monsters that are 3-starred or less. This gives the deck extra versatility if needed.
Oh look, another electro that's wrong. Balance? Are you serious? No no no no... switcharoo. Unless you want to draw doubles all day. Toy magician is alright, but this deck needs higher atk beaters for survivability. Throw in 2 of the 2000 atk amazon girls, or even bazoo. Electro does enough back board locking alone. He doesn't need 2 other monsters to help.