To the uninitiated, spell casting resembles a highly energetic drunken dance, complete with incomprehensible mutterings. Channeling and controlling magical energy is a very strenuous activity and the fragile human form is not a suitable conduit. Whilst weaving magic, bones will twist and warp, skin will glow and shimmer and there can be localised anomalies in the laws of nature (time, light, gravity, etc...) Often these side-effects will leave the magic users body permanently transformed, including: rapidly growing fingernails, glowing mucus, prehensile beards and such like.
Once the exhausting ritual is concluded, which can be anywhere between a few seconds and a few centuries, spellcasters are often left fatigued, with a severe migraine and a bad case of the munchies.
Lately, non-magical interpretations of these 'spell dances' have become a popular form of entertainment and are today enjoyed in taverns and palaces alike. Notable spell dances include:
1) The Prance of Death
2) The Shimmy of Healing Rain
3) The Jig of Summoning