The Gastromancer

A 300 lb master wizard who is cursed with endless farts. His belly is full of gas, anything he eats is transformed into farts instantly. He uses his magic to control his fart gasses, enchant them, and basically casts spells with his butt. The Gastromancer is able to cast the following spells:

Fumigate = Unleashes a massive smelly fart that blinds and sickens those who smell it.

Ass vacuum = Sucks a single target into the depths of his rectum, where they are trapped in foul ​fumes forever.

Fairy farts = Will enamor those who are forced to smell the pink ass gas, allowing the Gastromancer to control them. ​

Stinkbomb = a massively powerful fart that knocks down foes with a brown blast wave.

Enslave = Enters the mind and alters the victims thought process, forcing them to love farts and worship The Gastromancer's big booty.

Facesit = Plants his hefty hindquarters atop the enemy and rides out their struggles. Those pinned are susceptible ​to 'Ass vacuum' and 'Enslave'.

Polymorph = Can transform a single victim into underwear or a diaper. The victims face is depicted on the rump portion of the underwear they've been turned into.

Friendly fart = A fart that clings to the user, making then repeatedly smell the stink. Three turns of exposure results in the 'Enslavement' spell being cast automatically.

Gassy gust = Levitates a single foe, trapping them in a swirling vortex of farts. If they don't break free, they will be 'Ass vacuumed' next turn.

Feral form = Can transform a single target into a dog. If a dog smells too many farts, they can never change back.

Gas ghosts = Farts out a trapped soul that was lost in his bowels. This ghost cannot be harmed and can possess a single target, putting them under Gastromancer's control.

Absorption = merges a victim into The Gastromancer's butt, fattening his rump and transforming the target into more fat.

Hypnotic hips = A dance that charms others into obedience. Those who watch too long fall in love with The Gastromancer's butt.

Fatal fart = A pungent, rancid gas cloud that digests everything it touches. Anyone bathed in this brew of butt fumes will be reduced to a pile of poop.

Stinky sublimation = Forces a victim to sublimate with the farts around them. A person with simply disburse into fetid fumes when this spell is cast.

Appearance: A squat, round, well-dressed wizard, with more butt than body. His back simply ends halfway down, allowing the gigantic jiggling backside to balloon away from his body. This man is constantly farting, powerful bassy rips that stink to high heaven! Some say you can occasionally hear screams, moans, and wails lining his farts...

You enter a tower and ascend a few floors before meeting the fattest wizard you've ever seen! He threatens you with many fates worse than death, but you're after a rare treasure and one little fat mage won't stop you!