Ginny
Never thought I'd live to see a Weasley in Slytherin.
That's... actually not a bad plan. So long as one detail is added. This 'strongest' group includes me. And not Scorpius.
Gryffindor plans usually consist of stubbornly repeating the same tricks over and over again and hoping they work. They also take a while and are very rarely properly thought through. The fact that they still work anyway is just annoying.