Certificates
Its good to play all classes and unlock the certificates so you have them available for use in any situation that may call for it. Also certain combos give very nice bonuses. These are some of the examples you can use. Remember, you choose to fit whatever you lack or need for your stats specifically.
Luminary Certificates
I feel all these certificates are extremely useful for Luminary, so try to incorporate them into your build.
Note: Once Lumi hits Lv40/50/60 the base Certificate will upgrade to their Lv II counterpart, completely replacing the old one. The 5% bonus will then upgrade to a 10% bonus.
Magic Lesson and Magic Lesson II
You will acquire at Lv10 and Lv40
Description - If the skill causes damage, there is a 10% chance of recovering 5% MP, when upgraded, it will be 10% MP.
Chaotic Will and Chaotic Will II
You will acquire at Lv20 and Lv50
Description - Increases Magic by 5%, when upgraded, it will be 10%.
Demonic Slash and Demonic Slash II
You will acquire at Lv30 and Lv60
Description - When MCRIT is activated, CAST SPD +5%, when upgraded it will be +10%. Stackable up to 3 times. Lasts 4 seconds.