I engineer fun. Kind of like how engineering is now, but all about fun stuff. Like I'll make party balloons that explode.
We all love Brewmasters, that could be your ability shaping profession. Depending on what beer you drink, you get a short buff involving added abilities, or enhanced abilities. Class-specific, maybe?
(Shaman) "Your debaucherous drunken-haze is so strong that your hallucinations become reality; on successful cast of lightning bolt, you have a 2% chance to summon a naked spiritwalker to pour beer all over your target, making them 20% weaker to all nature damage for the remainder of their life."
"Your lightning bolts have a chance to summon a Pandaren Brewmaster, infusing alcoholic beverages into each lightning bolt cast; these casts provide a stacking debuff on your target. 20% chance per lightning bolt to decrease nature resistance by 2%, stacks 10 times. Lightning bolts appear a brownish liquidy color."
(Too OP and ridiculous, amirite? Har har)