<Snipped quote by Centimane>
Good CS. I suppose my only quarrel would be the charms. I would like to see more of a list (not necessarily a definitive one) of them where we can better gauge their range and limitations. For example, how long does it take for him to summon a weapon? Does he just simply mutter a couple of words and it then appears in his hand? Does the weapon last for a limited time? How strong are the weapons? Could he give the weapons to others?
It's just that without this, there is in theory nothing to stop you from writing later down the lines something along the lines of: "He pulled out the charm, and with the whispering of three small words, summoned an armoured dragon that could not be killed. The Dragon, who he named Borris, then proceeded to kill everyone in the world save for his master."
Those are valid concerns, so I suppose the first thing I should say is: regarding the armoured dragon thing - I would never do that. That sort of showboating in this kind of RP - which has more in common with collaborative writing than it does with tabletop gaming - would only make for a terrible story that no one would enjoy reading - which really isn't in anyone's best interest, including my own. And even in standard tabletop gaming, it’s much better practice to set your fellow players up to look awesome than it is to spend your time trying to make your own character look awesome – the only thing the latter activity ever results in is a whole lot of not-awesome-at-all!
As for what Shikoba can actually do with the charms; they're essentially a class of "disposable magic wand" and a “real” wizard or sorcerer (like Drusus) would probably never need to rely on such a thing. To answer your questions:
If the charm is a premade one, then he simply needs to pull it out and, depending on the nature of the spell it represents (read: what is dramatically interesting in the moment), either make the correct gesture(s) or recite the appropriate incantation. The paper charm then vanishes in a puff of suitably magical-or-at-least-mystical-looking smoke and is replaced with the desired item. So, basically, it takes as long as he requires to actually pull out the charm and then gesture or incant – usually just a few seconds.
If the charm has not been prepared in advance, then he needs to pull out a writing implement (a brush or quill, with ink if writing on paper, or he can use chalk if scribbling on a wall, or even a knife would do if he wants to carve the inscription into something), and something to write the charm on. He can then write out the charm itself. Often (but not always) a prayer or incantation – or both – must be uttered aloud while he writes (again, dependent on what is dramatically interesting). The written charms are always short, and so can be written fairly quickly (i.e. within a minute or so for simpler spells, longer for more complicated ones that also require lengthy incantations, prayers or obeisances), but there’s a degree of precision involved if he wants them to be reliable and work well, so if he tries to do it in a rush there’s an element of tension there as things can go wrong if he rushes too much (and once again, this is true mostly for dramatic reasons).
The items summoned last until he dismisses them (which requires its own charm to accomplish), and the items themselves are not summoned from out of nowhere – they are real items that he must first acquire from somewhere. The items are then dedicated to Salri, the tribal equivalent of Dorn (god of darkness), who will then hide the item(s) for him – or so his personal beliefs dictate – and the charms either retrieve them or return them, as the case may be. By dedicating such items to Alynev (the tribal equivalent of Salri’s wife, the goddess of light), he can make them appear to be something they are not – even living creatures – but such illusions are limited by the relative size of the disguised item (so a knife cannot be made to look like a horse and wagon, for example), and while the illusions tend to be extremely convincing at first glance they also tend to collapse quickly under any sort of close examination. Also, illusions like this always require actually sticking a paper charm to the disguised item in question, and unless Shikoba has the time to carefully secure the charm it can be easily blown or brushed off, which instantly breaks the spell.
Because the weapons are real weapons that he must acquire from somewhere, they are only as strong as ordinary weapons. And yes, he can give them to others; they are real weapons, after all.