Hiden (秘伝, Secret) Jutsu are passed down from generation to generation in certain regions or clans.
The groups possessing these techniques are usually extremely secretive about them. They ensure that no one other than the members of the group learn them. Only a few Hiden jutsu require a special ability or lineage. These jutsu are usually the pride and fame of the clan that possesses them. Nara clan's Shadow Imitation Technique and the Aburame clan's Destruction Bug Host Technique are some examples of this.
They are not to be confused with Kekkei genkai, jutsu that require a specific genetic ability.

If you wish to create a custom Jutsu you must create a thread with the name of the Jutsu, as well as the clan name. You must get the okay from a moderator, who will most likely post below your post, approving it or asking for a slight change.

If the jutsu you are creating is for a certain clan or bloodline, please post those jutsu links on the Kekkai Genkai thread you have created to avoid confusion.