You can't say that. Plus, since we would have to people running the club, who are at a much higher level than everyone else, the 'refs', they would just cancel out the spell.
And if you read, you cannot do something without letting your opponent respond.
Let's say, James and Harry are fighting, okay? (not likely but first characters I thought of
) It's a 1/2/1 fight. 1 intro each, 2 fight posts, and one end finishing move.
James' into post
James is waiting for Harry. He says,
"No Harry, I am your father." and breathes heavily
Harry's inro post
"Nooooooo! I will duel you and you will admit that is a lie!" yells Harry. He moves to attack position, wand raised.
James' first fight post
"Don't make me hurt you son! Expallimarus!" yells James, in an attempt to disarm Harry.
Harry's first fight post
Harry jumps out the way, yelling, "Petrifacus Totalus!" A shot of light, the full body bind shoots out his wand aiming straight for James' chest.
James' second fight post
"Protego," says James contempously, using the shield charm. His counter-attack is a silencing charm, "Silencio"
Harry's second fight post
Harry is hit by the silencing charm, and he throws himself at James, punching him in the nose.
Okay, so this is the more confusing bit. Here I will NOT allow killing spells, and unforgivable spells, except in special circumstances. These next two posts are individual of each other, and now is the only time that you can control another persons character.
James' finishing post
The puch hits James squarely in the nose, and he falls backward, bringing up his wand and shouting,
"Petrifacus Totalus!" and Harry's arms and legs snap to his sides, and he keels over face first. James wipes the blood from his nose, and walks over to Harry, casting a tickling charm on him. Harry is being tickled, and while his arms and legs are held he cannot do a thing until the duel is over.
Harry's finishing post This will be shorter, cos I have to sleep.
Harry wrestles James' wand from him, and casts the slug charm on him. While James is busy producing slugs, harry hits him with
"Wingardium Leviosa!" and James flies upward, hitting the ceiling to drop back down with a bump.
End of match, refs decision is JAMES WINS!
Okay guys? Notice James' 'player' let him be hit. It gets boring if you have invicibile characters.