Yeah, I was thinking the same thing.
I have an idea, but it'll mean Aiden doesn't get his Caster until later in the RP. When I mean later, I don't mean like half-way through the RP, I mean like a few more IC days. I won't go into detail over VM, seeing as how it will spoil a lot, but if you want me to explain I can do it through PM. Either that, or you can just take my word :/
The obvious answer would be that Aiden somehow meets a Lucid, but that would be sort of 'cheapening' them, if you get what I mean.