Teratogens

The Teratogens constitute a class of the Golgari elite on Ravnica; the other classes being the Devkarin and the humans. Up until the Decamillennial, the teratogens were the ruling class. Afterwards, however, the Devkarin took over.

Teratogens can essentially come of any background conceivable, though mostly they consist of non-humanoids such as plants, mutants, harpies, nagas, griffins, and centaurs.

Trivia

 * In the sciences, specifically developmental biology, a "teratogen" is an agent that can cause malformations of an embryo or fetus. This can be a chemical substance, a virus, or ionizing radiation.