Like the trig witch for trigonometry, the Polar Wizard is capable of making annoying integrals much easier to evaluate. With a single utterance of "Presto!", complicated integrals become easy integrals in polar coordinates.

Notably, this is the Polar Wizard in his first incarnation. Later incarnations have r's and thetas all over his gown, and the R and O in presto are replaced with r and theta, respectively.

I know, I'm adorable.