Majin Law

Majin Law (魔神ロウ Majin Rō) is one of the "Three Great Genie Magics" created by Hiyama Machi, and an improved version of Law.

Description
When activated, a bright light envelops the area and inflicts massive damage on whoever the caster perceives from their heart as an enemy, leaving friends and bystanders completely unharmed. The choice between friend or foe is decided by the user's heart, and they cannot lie to this jutsu. It is considered one of the most powerful techniques and is one of the rare legendary jutsu, and also one of the Three Great Genie Magics.

The technique's strength was so great that it defeated Mura Izumi, a revived Kage, in a single blow, during a battle in the Sand Renegade vs. Kirigakure war. According to Machi, Genie Law is a deterrent jutsu, meant to discourage further action from enemies, and is not something that should be used lightly.

Setting Law as its basis, Machi modified and improved it so that users wouldn't suffer from its side effect, but he has noted that this jutsu is meant to only be used to a singular target and the more targets the caster uses it on the more lethal it would be to their lifespan, and in the worst cases can cause death to the caster.