bloodline/clan: Omi clan
The Omi clan are vampiric shinobi who feed on the blood of humans. When they become a high enough rank there bloodline effect awakens allowing them to bend a element their will.
Abilities:
The Omi clan members have inhanced strength, stamina and speed compared to most shinobi but they lose the power to cast/do genjutsu. Chakra control is also lowed but can also be regained through training. Once members of the Omi clan reach a certain rank, while gaining the specific amount of Knowledge of the ninja arts along the way, the bloodline effect awakens allowing the user complete control over one element.
[Hakushin, dont get pissed. I wanted the same kind of bloodline but lets face it, it wouldnt have been approved T_T]