Have mine at 42 and still haven't touched it. It was fun getting the spells at first but overtime the frustration really sets in. Now that we're reaching level 60 content and BLU is going to be taken into Thordan EX, Sephirot EX, Niddhog EX it's going to be so awful. The spells either need to be completely worth it or there's just no point in even trying.