Fire Dragon Slayer Magic

Fire Dragon Slayer Magic is currently the only Tier 4 Magic type in the game.

The spell available for it is:

Fire Dragon's Fist
RAWRRRR look at me ma' I'ma dragon.

The requirement is level 1 with a cost of 100 Magic and cooldown of 3 seconds.

Fire Dragon's Fist's damage formula: ???; Where 'x' is the current level of the user.