Fire God's Kagutsuchi

Flame God's Kagutsuchi (炎神のカグツチ Enjin no Kagutsuchi) is a Flame God Slayer Magic Spell.

Description
Zancrow spreads his arms and legs and unleashes a giant ball of black flames around his person. This was first seen against Natsu, and it completely overpowered Natsu's "Brilliant Flame".

Trivia

 * "Kagutsuchi" is a fire god deity of Japan who burned his mother to death when she gave birth to him.