I was bored... and I decided to copy MLP meme stuff. based off of the fact that nobody else has ever made a math 'brony'. Even though, apparently, there ARE unicorns with special math powers. I included a chart to demonstrate why you really do need magical spells to do calculus, lol. see [link] , Twilight's 4th line.
I couldn't think of anything better than "Gauss". There's nothing punny about ponies and mathematicians.
He uses his magical unicorn horn to get really lucky in finding the correct antiderivatives, the correct pattern, etc. Also, he completes proofs with it.
He is currently working on a spell that will enable him to prove the Riemann Hypothesis. He admires Twilight Sparkle's intellect... and magical prowess.
His 'cutie mark' says: Pi/2 = integral [ sqrt[ 1 - x^2 ] dx ] I may have forgotten to make the integral definite... sorry about that...