We had but two answers one was right one got a couple wrong, so well done both of you who tried to complete this logic puzzle
Answers
1. Neville and Cho cast expelliarmus.
2. Ron and Luna cast silencio.
3. Bill and Fleur cast scourgify.
4. Draco and Hermione cast impendimenta.
5. Harry and Ginny cast reparo.
And the winner is...
Points
Team Godric = 62
Team Helga = 0
Team Rowena = 22
Team Salazar = 0
Spreadsheet is updated
here