Akashics
Filling the role of the skill-user, the akashic is probably the strangest class in the book. The name comes from the "akashic memory," an actual concept from the real world. The idea is that all knowledge and experience of all conscious beings is collectively stored together somewhere. In Arcana Unearthed, then, the akashic is able to tap into this collective memory to gain knowledge. While he has many skills of his own, he can use this ability to improve his own skills or use skills he's never had any training in. He can also use it to improve his combat abilities, or gain general knowledge about topics. He can even use it to investigate other people's specific memories so fully that he becomes a master of impersonation. This character is so flexible and customizable that no two akashics will ever be alike -- each can even choose his or her own class skills.
The akashic is in the game for the person who wants to play a character who's a little different. Interestingly, you can design an akashic to be a specialist, taking all related skills and using the special abilities to augment them, or to be a generalist, taking a lot of different skills and using abilities to do even more different things.