Amaterasu Blaze Release

Kagutsuchi (Blaze Release)
Ninjutsu (Katon; Requires Mangekyou Sharingan, Amaterasu (a)) [Fire, Uchiha Kinjutsu]
Rank: 12 (A-Class);
Range: Personal;
Effect: Black flames protect the user;
Duration: 1 round/2 extra chakra;
Saving Throws: Dex half and Dex partial;
Chakra Resistance: Yes (see text);
Chakra Cost: 12.

This technique shapes the inextinguishable black flames of Amaterasu into a spiked barrier that not only shield the user but also burn and pierce the opponent if they touch them dealing 80 points of fire damage.