i have ~600/800 char & ~400/495 equip and i dont wanna know how much ampies i need o) have maxxed only alpinia and kerria is close till almost 6months back i was using 10 of each ampies on all 5* *facepalm*
.. highest concept mission gives good drop rate on ampies.. but taking into account u can get ~ 10ampies avg a day ull reach it probably in half a year