Drop from Karu Glowing Pot-Belly Spider, perhaps others.
Awakened
12 MAX
Drop from Rundal Siren, awards 6 magic attack as well. Difficult to bridge however the Small Abysmal Omamori Amulet that also drops from Rundal Siren makes this less of an issue.
Amneisa
10~13 MAX
Drop from Alby Advanced Hardmode.
Oblivion
10 MAX
Found in hallway and the end chests of Albey Mystic Amber and the Giant Horned Gnu field boss.
Quartz
5 MAX
Drop from Karu Forest Dungeon or from fishing boat fishing