God Slayer Magic

God Slayer magic is basically the same as Dragon Slayer magic but it is apparently more powerful. However, the only known user thus far, Zancrow, overexaggerated somewhat when he called himself a God Slayer, as he was taught the magic by Hades, his master that he merely believed had enough strength to be equal to a God. However, Zancrow's fire magic has nonetheless been shown to be completely superior to Natsu's.

Fire

 * Known User(s): Zancrow

A God Slayer ability which incorporates the element of fire into the user's body. This allows the user to produce black flames from any part of their body. The user is also able to consume flame of any sort to replenish his/her strength.

Spells:
 * Fire God's Kagutsuchi: Zancrow spreads his arms and legs and unleashes a giant ball of black flame around his person. This was used against Natsu, and completely overpowered Natsu's "Brilliant Flame".
 * Fire God's Bellow: A similar attack to Natsu's "Fire Dragon Roar", Zancrow breathes a massive fireball of black flame at his opponent. While using this attack his fire is bright, not black.
 * Fire God's Punch Attack : An unnamed attack where Zancrow releases a massive stream of black flame at his opponent by launching his arm forward in a punch-like motion. This attack demonstrated that Natsu couldn't eat Zancrow's flames. (Unnamed)

Trivia

 * Similar to Hades's magic, God Slayer attacks are named after Japanese Shinto Gods.