Just create whatever scenario you have to for the duel to happen.

Maybe while on the way to Slughorn’s party, Draco and Pansy stopped Luna and Harry and a duel broke out.

Or when Voldemort and Harry began dueling, Bellatrix tried aiding Voldemort so Luna began helping Harry.

Be creative! 🤗

Ginny Ron and George seek revenge after the death of Fred

Anything with draco in it