Zabuza, Demon of the Mist

Hidden Mist Jutsu—{3}{t}: A thick mist covers
the battlefield for 4 turns. Swordsmen of the mist
get damage priority while this is in effect.
Silent Assassination—{5}{t}: As long as the Hidden
Mist Jutsu is in effect, Zabuza can locate and kill target shinobi of Chunin level or lower instantly.
If Zabuza targets a Jonin with this technique, roll
a die. 1-3: the target fends off the attack and is
dealt 1 damage. 4-6: The target dies.
Overwhelm