Fire Dragon King Mode

Flame Dragon King Mode (モード炎竜王, Mōdo Enryūō) is a Fire Dragon Slayer ability.

Description
Flame Dragon King Mode is a unique ability granted unto a Fire Dragon Slayer by Igneel, the King of the Fire Dragons. By bequeathing an amount of Igneel's power unto a Fire Dragon Slayer he resided in, the user is capable of utilizing the Magic of the Fire Dragon. As a result of entering the mode, the user radiates incredible heat. The power the user wields is considered to be comparable to that of Igneel himself, however, because the power is that of Igneel's alone, once the user runs out of this magic power; they cannot use it again.