Yasaka Magatama
Releasing a war deity, one of the three treasures is thrown and will travel thousands of miles (figure of speech, just means it will travel over great distances) to pierce the enemy.
The Jutsu that is Itachi's most powerful long distance attack.
During the recent great ninja war Susano'o activation was shown
Magatama looks like a giant sharingan pattern (Basically), and is thrown like a Shuriken.
It was used against Nagato's Chibaku Tensei, it was used at the same time as Naruto's FuutonRasenshuriken and B's TBB, to hit and erase Chibkau Tensei.