I technically have a clan, but I've never done much with it due to some recent scheduling issues. This would be an official submission for a "new" clan.
Inazuma
Village: Technically any as this would be new.
Leadership: Makoto
Brief History: Clan was founded by Yuuma "Crimson Bolt" Inazuma. He built the clan from the bones of his Fathers clan, the Araki clan. The Araki clan worshipped power above all other things, but Yuuma would have hoped to lead the clan into a new era. Instead he conformed to the rule of his father. Over time he found the inextricable connect between chakra and life. Creating a set of trials he was able to draw on his own life forces to power his jutsu's. The first trial was "Flow", in this trial one must learn not to rely on chakra to make them strong. The second trial was "Preservation", surviving an onslaught with the flow of chakra halted. The final trial was, "Domination", overcome the reliance of chakra and using your own life force to power one deadly blow. After he himself completed the trial his lightning jutsu's took a blood red tint. He would go on to challenge his father, claim the clan, and rebuild it. Naming it Inazuma after the single blood red bolt that pierced his fathers chest.
Clan Ability: There would be two pathways to designing this clans abilities. Either would work fine.
1. A status effect. The user surrenders all their chakra granting them a new form. Uses health to cast an ability. The abilities power would be increased, but it would obviously cost them health and they would have no access to chakra since the ability drained all of it at the very beginning. It could have some timer or not.
2. A select number of abilities are made with their color changed to some degree of red (Fire might have an issue with something like this, but I'm not sure how many specific abilities would be made. Each of these abilities would function just like their normal counter parts, but would require health to cast.
This is pretty much all I came up with today. I would like to add that if the clan was made the Trials of Three would be a legit RP event within the clan, and I could go into more detail as to how each of those trials would work. They would be the gateway to joining the clan officially or at least the upper management. I didn't include any ingame achievements mostly because I've been active at different points in the development of the game. If there were anymore questions feel free to ask.