Flame God's Kagutsuchi

is a Flame God Slayer Magic Spell.

Description
The user spreads their arms and legs and unleashes a giant ball of black flames around themselves. This spell was strong enough to counter Natsu Dragneel's Fire Dragon's Brilliant Flame.

Incantation
When you burn down the west... and you burn down the east... Flame God's Kagutsuchi!

Trivia

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