Question

You can't just find it, it isn't incorporated in most sources. Either you have to make it yourself or get someone to help (no, I don't know how to do this).

Well let's continue, i have client with some of effects in it. Then easier question, no one know where i can find them written?

If you are still trying to find someone who will write you free code, give up already. There are 2 ways you can do this:

1) Creating a tag in the XML, which you can then write to equipmenttooltip.as, and then correspond that with a function or effect in the server files.
2) Adding ItemData to the server, which allows you to change the value of items and such...

As stated before, there no place where it is written for you.

Well im not trying to find someone who can do it by me, i would do it only if i would give up. Name it: "collecting as many required information as possible, then do it myself"

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Good to say, i've found these bonuses written in Player.cs file.

rotf doesnt have itemdata ;P

So does RotF use like a tag in the XML which corresponds to function or effect?