It all depends on one's rank in the clan; your Keigoku can only pass through so much before it's "intangible energy", we'll call it, runs out. As a Paladin, your Keigoku can only pass through small rocks, bushes, rain, and mist. When it comes to Keigoku, don't go by rank, but instead by size of the technique it's trying to phase through; with this technique, the fire must be defeated first before someone can start countering the Keigoku (though this technique can be used with jutsu that aren't fire, you understand what I mean, right?). After someone becomes a certain rank in the clan, their Keigoku can pass through many objects and it becomes difficult to block, making the best defense to dodge the Keigoku. Do you have any other questions before moving on?