Help! That guy's on fire!

So you got Brand and Annie who play around with fire, but you don't have a champion who is actually burning from the inside. The idea my mind just barfed out 5 seconds before i started writing this is to make a champ that is fire.

Thus far all i could think of was have him constantly radiate fire as the innate, which causes more damage the closer you get. Then you got a passive that deals damage only to melee attackers, which charges as damage is dealt and at a certain threshold, it blows out in waves which damage and knock back enemies. Might work as an ultimate, like Rammus' tremors. As an ability, have the dude scream/barf out a cone of fire and/or spit out a fire stream.

Anivia's his mortal enemy because, you know, ice ice baby.

Feel free to do whatever. I don't care. (I want 1% of the profits and the rights to the movie franchise.)