@TheBeggar: I think you might need to edit some stuff in your profile then, since it seems to contradict you on whether or not he actively avoids people and if he's willing to go on missions with others. As for the abilities, I'm going to need more information about the sword before I can say anything about whether or not it's okay. Both in terms of what it actually is and what its abilities actually are, since, while I missed it reading through the first time, I don't really feel comfortable letting in an ability with basically no description of what it is/does. 

As for the roulette...I'm not sure if this was intentional or not, but half of the abilities for it seem to be "make sight useless", which...wouldn't be TOO bad if it weren't for his ability to shut down all of a target's senses except sight. I don't really like the idea of him being able to manipulate nature on a level beyond what he should be capable of, even if it's not under his control after a certain point. Also, gods don't actually exist in the setting (religion does, but...not gods, or if they do exist, they don't really interact with the world) so the staff might need some changes in terms of that. Also, honestly, I don't really like the "99% of its power is sealed" bit.

@Arek: The first thing I've got to ask about is your character's name. Um, is he meant to be a foreigner? Just wondering since the backstory doesn't really seem to suggest that, but I could be mistaken. It's just that the country this is set in is basically Japan. Also, while it's possible to create a familiar, it would be more complex than just "make thing and infuse with crystal". I guess the description in the OP didn't really say much beyond "dolls" but there's magic involved in creating them as well. As far as the wrench goes...I'm not sure how I feel about it growing to the size of an elephant, that just seems a bit too much to be honest.

And as far as magical technology goes...I haven't fully fleshed out how integrated the two are, but for the most part, unless there's a reason for something to have magic involved in its construction, they're seperate. And it really depends, some things would just have magic involved in the construction, some would require infusions and others would be a mix of the two.