>>535996753
In case anyone else was also wondering. Farming the event for both Luminite Ore and Salted Mandrake is the ideal choice.

A Salted Mandrake costs 510 florins, and you get 300 florins per 20 activity spent (15 per point), meaning each Mandrake costs 34 activity. 3RD-13 Hard costs 18 activity per run, at only 34.1% chance (according to KBD) of dropping one Mandrake, and 68% of dropping one Magnesia. Meanwhile, each Luminite costs 11.3 activity through the event, while 9TH-1 Hard only has a 30.9% chance for 20 activity. Clearly LPdF-10 Arduous is the ideal way to spend your excess activity if you need to stock up on these.