Tip
Kassadin’s magic shield (Q) makes him difficult to kill, but continue to contest him with basic attacks and [Q] often to reduce his health. If Kassadin closes in with (R) post-level 6, root him immediately with [Q]
Morgana vs Kassadin

Kassadin’s magic shield (Q) makes him difficult to kill, but continue to contest him with basic attacks and [Q] often to reduce his health. If Kassadin closes in with (R) post-level 6, root him immediately with [Q]