Invoking the name of the prince of fire elementals.  Bursting flames all over your body, at this time, you swell up to more than twice as tall and burly, like a giant.  Under the body of Vulcan, all attributes are increased by 3 times, skill attack power is increased by 3 times, damage is reduced by 3 times, and all control skills are immune.  Your body creates 1d10 fire damage, and this fire can set flammable substances with in five feet of you on fire.  However this effect can only last for one minute, and you suffer 1 point of exhaustion afterwards.  It can be stacked with feats like rage, altho the downsides stack as well.  

(ei. Vulcan Body + Rage = +3 all attributes +  a +2 bonus to the damage roll = 2 points of exhaustion.)