Sorcerer

A person who is able to utilize magic through the casting spells or by force of will, also known as "Sorcery". A common example of it's usage tends to denote a magic-user that is crafty, forceful and/or intentionally deceptive. A sorcerer tends to be willing to engage in what is commonly known as "Black Magic" whether their intentions be honorable or otherwise. A sorcerer is also commonly attributed with the power to influence or dominate other peoples minds through magic.

(Not intended to be a definitive description as many people use the various terms for magic-users interchangeably.)