There will be skill crafting, so that you could put two skill books together and get a new skill. One of the shown will be Rain + Blood letting = Blood rain (Not so special because you can buy it anyway) an other was I believe: Summon Spider + Fortify for some kind of Terminator-Spider if I remember correctly.
Not sure how many craftable skills are planned, and if all will also be buyable anyway, which would make it less awesome for sure.
Didn't know about that. That's pretty swell.
