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Theory Scrolls, as listed item list (I posted it in the Kumo Bank), are simply a way to "learn" jutsu or styles that your RPC created, from a scroll. Say you create a custom Gen/Ninjutsu, you would use the scroll to create the jutsu rather than have the scroll tell you how to do the jutsu itself. The same goes for tai/ken styles, if your RPC created a style you would still learn it the same (First learn the stage then any techniques).

Basically it's how we worked RPC designed things into the currency system (How Hinote did that is). A similar thing applies to technology and weapons, if you want your RPC to be the creator you just spend the prescribed cost on materials rather than a finished product.

I'm not sure I understand where you got your interpretation so maybe there is something else with the name of "theory scroll" of which i am somehow not aware. Otherwise I hope this helps.

(On your other question it would be better placed in OOC. Unfortunately I'm not very talented with styles so I can't help.

I'm pretty sure its strange for a crew member to ask a question here, but I'll do it anyway. If a bloodline/clan gives an RPC the ability to add an element on to another, for example adding lightning to crystal like Crystal release does, and I make a combination that I deem to powerful for the little cost it has and I make it a custom jutsu just to balance that out, do I have to take the steps to learn the technique even if I just made it into a technique to balance it out?

Exactly this. Something such as creating a crystal hammer, which only takes E rank chakra, and then adding lightning which technically costs no chakra since it doesn't say so in the bloodline though I'd pay for the amount of the Lightning chakra's value, and then use it as a single electric crystal maul, which would hurt quite a bit and that's only one of the combinations I had thought up of.

What's not really what's interpreted from this; it says that it can be electrically charged to enhance power, so with that wording, it may as well mean that the user can pass their lightning chakra to do it. It doesn't say anywhere that it has to be with a Jutsu :/

Fair enough. Though the current transfer skill does the same thing in reality. That would work out fine I guess.

And a second question: If I have elemental control and ability control, does that mean that my lightning and crystal techniques are powered up by one rank each and my other techniques are powered down by 2 ranks? Or do my Lightning and Crystal technique bonuses cancel each other out and remain with the same, but my other technique ranks still lower 2 ranks?

I know they don't, but what I mean is that if Elemental Control Boosts the Rank by one of the element, but lowers the rank of everything else by one, and so does Ability, save for the ability I choose, does that mean that my Element and Ability remain at their base rank, and everything else drops 2 ranks? Meaning that it would be like this:

Lightning: 0
Non Elemental: - 2
Crystal: 0
Genjutsu: - 2

or

Lightning: +1
Crystal: + 1
Non Elemental: -2
Genjutsu: -2

Because if it is the first one, then that combination is useless....

Then using either of those is purely useless.... I need a new Type Combination...